/* Cosy Diary - Design Luxueux & Sobre */
/* Google Fonts - chargement des polices */
@import url('//fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
    /* Palette de couleurs luxueuses */
    --color-primary: #1A1A2E;
    --color-secondary: #16213E;
    --color-accent: #D4AF37;
    --color-accent-light: #E8C547;
    --color-accent-dark: #B8942F;
    --color-surface: #0F0F1A;
    --color-surface-light: #252542;
    --color-surface-hover: #2D2D4A;

    /* Texte */
    --color-text: #F5F5F7;
    --color-text-secondary: #A0A0B0;
    --color-text-muted: #6B6B7B;

    /* États */
    --color-success: #4CAF50;
    --color-error: #EF5350;
    --color-warning: #FFA726;

    /* Bordures et ombres */
    --border-color: rgba(212, 175, 55, 0.2);
    --border-accent: rgba(212, 175, 55, 0.5);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.15);

    /* Rayons de bordure */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Typographie */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-surface) 50%, var(--color-secondary) 100%);
    background-attachment: fixed;
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-light);
}

/* Layout Principal */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
    width: 280px;
    background: var(--color-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.sidebar-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.sidebar-subtitle .heart {
    color: #E91E63;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.sidebar-nav {
    flex: 1;
    padding: 1.5rem 0;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text-muted);
    padding: 0 1.5rem;
    margin-bottom: 0.75rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1.5rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.nav-item.active {
    background: rgba(212, 175, 55, 0.1);
    color: var(--color-accent);
    border-left-color: var(--color-accent);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background: var(--color-accent);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

a.user-profile {
    text-decoration: none;
}

a.user-profile:hover {
    color: inherit;
}

.user-profile:hover {
    background: var(--color-surface-hover);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-primary);
}

.user-info {
    flex: 1;
    overflow: hidden;
}

.user-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-status {
    font-size: 0.75rem;
    color: var(--color-success);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.user-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* Mobile Header - caché par défaut sur desktop */
.mobile-header {
    display: none;
}

.mobile-profile-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.mobile-profile-btn .user-avatar {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.mobile-profile-btn:hover .user-avatar,
.mobile-profile-btn:active .user-avatar {
    transform: scale(1.05);
    box-shadow: var(--shadow-gold);
}

/* Overlay pour sidebar mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

.sidebar-overlay.active {
    display: block;
}

.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* Cards */
.card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-gold);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: rgba(212, 175, 55, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.gold {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.1));
    color: var(--color-accent);
}

.stat-icon.rose {
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.2), rgba(233, 30, 99, 0.1));
    color: #E91E63;
}

.stat-icon.emerald {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.2), rgba(76, 175, 80, 0.1));
    color: var(--color-success);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Progress Bar */
.progress-section {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.progress-title {
    font-weight: 500;
    color: var(--color-text);
}

.progress-value {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-accent);
}

.progress-track {
    height: 8px;
    background: var(--color-surface-light);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent-dark), var(--color-accent), var(--color-accent-light));
    border-radius: 4px;
    transition: width var(--transition-slow);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--color-surface-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-dark), #9A7B2A);
    transform: translateY(-1px);
    box-shadow: var(--shadow-gold);
    color: var(--color-primary);
}

.btn-secondary {
    background: var(--color-surface-light);
    color: var(--color-text);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--border-accent);
}

.btn-danger {
    background: rgba(239, 83, 80, 0.1);
    color: var(--color-error);
    border: 1px solid rgba(239, 83, 80, 0.3);
}

.btn-danger:hover {
    background: var(--color-error);
    color: white;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-sm);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Activities List */
.activities-section {
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.activity-card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.activity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.activity-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.activity-card:hover::before {
    opacity: 1;
}

.activity-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.activity-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text);
}

.activity-date {
    font-size: 0.8125rem;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.activity-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.activity-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.activity-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.activity-actions {
    display: flex;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Chat Panel */
.chat-container {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    height: calc(100vh - 10rem);
    min-height: 400px;
    max-height: 800px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-interface {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.chat-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-partner {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.chat-partner-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #E91E63, #C2185B);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
}

.chat-partner-info h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
}

.chat-partner-status {
    font-size: 0.8125rem;
    color: var(--color-success);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.chat-partner-status.offline {
    color: var(--color-error) !important;
}

/* Style global pour tout élément "hors ligne" - plus robuste */
.offline,
.status-offline,
[class*="offline"],
.chat-partner-status.offline,
.user-status.offline {
    color: var(--color-error) !important;
}

/* Style spécifique pour le texte "Hors ligne" dans le statut */
.chat-partner-status.offline::before {
    background: var(--color-error) !important;
}

.chat-partner-status.online {
    color: var(--color-success);
}

/* Style pour le dot de statut */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.25rem;
}

.offline .status-dot,
.chat-partner-status.offline .status-dot {
    background-color: var(--color-error);
}

.online .status-dot,
.chat-partner-status.online .status-dot {
    background-color: var(--color-success);
}

.chat-partner-status::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 0;
}

.message {
    max-width: 80%;
    display: flex;
    flex-direction: column;
    animation: messageSlide 0.3s ease;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.sent {
    align-self: flex-end;
}

.message.received {
    align-self: flex-start;
}

.message-bubble {
    padding: 0.875rem 1.125rem;
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.message.sent .message-bubble {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-primary);
    border-bottom-right-radius: 4px;
}

.message.received .message-bubble {
    background: var(--color-surface-light);
    color: var(--color-text);
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.375rem;
    padding: 0 0.5rem;
}

.message.sent .message-time {
    text-align: right;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    background: var(--color-surface-light);
    border-radius: var(--radius-lg);
    width: fit-content;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-text-muted);
    animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

.chat-input-container {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.75rem;
}

.chat-input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    background: var(--color-surface-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--color-text);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.chat-send-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.chat-send-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-gold);
}

.chat-send-btn svg {
    width: 20px;
    height: 20px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    width: 90%;
    max-width: 480px;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--color-surface-light);
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1100;
}

.toast {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
    animation: toastSlide 0.3s ease;
    min-width: 300px;
}

@keyframes toastSlide {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast.success {
    border-left: 3px solid var(--color-success);
}

.toast.error {
    border-left: 3px solid var(--color-error);
}

.toast.warning {
    border-left: 3px solid var(--color-warning);
}

.toast-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    color: var(--color-success);
}

.toast.error .toast-icon {
    color: var(--color-error);
}

.toast.warning .toast-icon {
    color: var(--color-warning);
}

.toast-message {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--color-text);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-secondary);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--color-surface-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

.empty-state-icon svg {
    width: 40px;
    height: 40px;
}

.empty-state-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.empty-state-description {
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
}

/* Search */
.search-container {
    position: relative;
    max-width: 400px;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    background: var(--color-surface-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--color-text);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--color-text-muted);
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-surface-light);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 26, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

/* ===========================================
   RESPONSIVE DESIGN - Modern & Coherent
   =========================================== */

/* Breakpoints utilisés :
   - Desktop : > 1024px (default)
   - Tablet : 768px - 1024px
   - Mobile : 480px - 768px
   - Small Mobile : < 480px
*/

/* ------------------------------------------- */
/* TABLET - 768px à 1024px                     */
/* ------------------------------------------- */
@media (max-width: 1024px) {
    /* Sidebar devient un drawer */
    .sidebar {
        transform: translateX(-100%);
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    /* Contenu principal prend toute la largeur */
    .main-content {
        margin-left: 0;
        padding: 1.5rem;
        padding-top: calc(60px + 1.5rem); /* Espace pour le header mobile */
    }

    /* Header mobile visible */
    .mobile-header {
        display: flex !important;
        align-items: center;
        justify-content: space-between;
        padding: 0.875rem 1rem;
        background: var(--color-surface);
        border-bottom: 1px solid var(--border-color);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 50;
        height: 60px;
    }

    .mobile-menu-btn {
        width: 44px;
        height: 44px;
        background: var(--color-surface-light);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        color: var(--color-text);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all var(--transition-fast);
    }

    .mobile-menu-btn:hover,
    .mobile-menu-btn:active {
        background: var(--color-surface-hover);
        border-color: var(--border-accent);
    }

    /* Overlay sidebar */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.6);
        z-index: 99;
        backdrop-filter: blur(2px);
    }

    .sidebar-overlay.active {
        display: block;
    }

    /* Stats en 2 colonnes */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    /* Section header en colonne */
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .search-container {
        width: 100%;
        max-width: none;
        order: 2;
    }

    .section-header .btn {
        order: 1;
        width: 100%;
    }

    /* Activités en 2 colonnes */
    .activities-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    /* Chat adapté */
    .chat-container {
        height: calc(100vh - 140px);
        min-height: 400px;
        max-height: none;
        border-radius: var(--radius-md);
    }

    /* Photos en grille */
    .photos-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    /* Modal ajusté */
    .modal {
        width: 90%;
        max-width: 500px;
        max-height: 85vh;
        overflow-y: auto;
    }

    /* Toast au centre en bas */
    .toast-container {
        left: 50%;
        transform: translateX(-50%);
        right: auto;
        bottom: 1.5rem;
    }

    .toast {
        min-width: 320px;
    }
}

/* ------------------------------------------- */
/* MOBILE - 480px à 768px                      */
/* ------------------------------------------- */
@media (max-width: 768px) {
    /* Padding réduit */
    .main-content {
        padding: 1rem;
        padding-top: calc(60px + 1rem);
    }

    /* Titres ajustés */
    .page-title {
        font-size: 1.5rem;
    }

    .page-subtitle {
        font-size: 0.875rem;
    }

    .section-title {
        font-size: 1.25rem;
    }

    .page-header {
        margin-bottom: 1.5rem;
    }

    /* Stats en 1 colonne sur petit mobile, 2 colonnes sinon */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.875rem;
    }

    .stat-card {
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .stat-icon {
        width: 48px;
        height: 48px;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.8125rem;
    }

    /* Activités en 1 colonne */
    .activities-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .activity-card {
        padding: 1.25rem;
    }

    .activity-title {
        font-size: 1rem;
    }

    .activity-meta {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    /* Chat optimisé pour mobile */
    .chat-container {
        height: calc(100vh - 120px);
        border-radius: var(--radius-sm);
    }

    .chat-header {
        padding: 0.875rem 1rem;
    }

    .chat-messages {
        padding: 1rem;
        gap: 0.75rem;
    }

    .chat-input-container {
        padding: 0.875rem 1rem;
        gap: 0.625rem;
    }

    .chat-partner-avatar {
        width: 40px;
        height: 40px;
    }

    .chat-partner-info h3 {
        font-size: 0.9375rem;
    }

    .chat-partner-status {
        font-size: 0.75rem;
    }

    .message {
        max-width: 85%;
    }

    .message-bubble {
        padding: 0.75rem 1rem;
        font-size: 0.9375rem;
    }

    .chat-input {
        padding: 0.75rem 1rem;
        font-size: 0.9375rem;
    }

    .chat-send-btn {
        width: 44px;
        height: 44px;
    }

    /* Photos en 2 colonnes */
    .photos-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .photo-card .photo-delete-btn {
        opacity: 1;
    }

    .photo-info {
        padding: 0.75rem;
    }

    .photo-caption {
        font-size: 0.875rem;
    }

    /* Progress section */
    .progress-section {
        padding: 1.25rem;
    }

    .progress-title {
        font-size: 0.9375rem;
    }

    /* Boutons */
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
    }

    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }

    .btn-sm {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }

    /* Modal adapté mobile */
    .modal {
        width: calc(100% - 2rem);
        margin: 1rem;
        padding: 1.5rem;
        max-height: calc(100vh - 2rem);
        border-radius: var(--radius-md);
    }

    .modal-title {
        font-size: 1.25rem;
    }

    .modal-footer {
        flex-direction: column;
        gap: 0.625rem;
    }

    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }

    /* Formulaires */
    .form-input,
    .form-textarea,
    .form-select {
        padding: 0.75rem 1rem;
        font-size: 1rem; /* 16px évite le zoom sur iOS */
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Toast */
    .toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        transform: none;
    }

    .toast {
        min-width: auto;
        width: 100%;
    }

    /* Empty state */
    .empty-state {
        padding: 2.5rem 1.5rem;
    }

    .empty-state-icon {
        width: 64px;
        height: 64px;
    }

    .empty-state-icon svg {
        width: 32px;
        height: 32px;
    }

    .empty-state-title {
        font-size: 1.125rem;
    }

    /* Partner section */
    .partner-section {
        padding: 1.5rem;
    }

    .partner-code {
        font-size: 1.25rem;
        padding: 0.625rem 1.25rem;
    }
}

/* ------------------------------------------- */
/* SMALL MOBILE - moins de 480px              */
/* ------------------------------------------- */
@media (max-width: 480px) {
    /* Padding minimal */
    .main-content {
        padding: 0.75rem;
        padding-top: calc(60px + 0.75rem);
    }

    /* Header mobile compact */
    .mobile-header {
        padding: 0.75rem;
        height: 56px;
    }

    .mobile-menu-btn {
        width: 40px;
        height: 40px;
    }

    .mobile-header .sidebar-logo {
        font-size: 1.125rem !important;
    }

    /* Titres plus petits */
    .page-title {
        font-size: 1.25rem;
    }

    .page-subtitle {
        font-size: 0.8125rem;
    }

    .page-header {
        margin-bottom: 1rem;
    }

    /* Stats en 1 colonne */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .stat-card {
        flex-direction: row;
        text-align: left;
        padding: 1rem;
    }

    .stat-icon {
        width: 44px;
        height: 44px;
    }

    .stat-value {
        font-size: 1.25rem;
    }

    /* Activités */
    .activity-card {
        padding: 1rem;
    }

    .activity-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.375rem;
    }

    .activity-actions {
        padding-top: 0.875rem;
        flex-wrap: wrap;
    }

    .activity-actions .btn {
        flex: 1;
        min-width: calc(50% - 0.375rem);
    }

    /* Chat plein écran */
    .chat-container {
        height: calc(100vh - 100px);
        border-radius: 0;
        border-left: none;
        border-right: none;
        margin: 0 -0.75rem;
        width: calc(100% + 1.5rem);
    }

    .chat-header {
        padding: 0.75rem;
    }

    .chat-partner-avatar {
        width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }

    .chat-messages {
        padding: 0.75rem;
    }

    .chat-input-container {
        padding: 0.75rem;
        gap: 0.5rem;
    }

    .chat-input {
        padding: 0.625rem 0.875rem;
        font-size: 1rem;
        border-radius: var(--radius-lg);
    }

    .chat-send-btn {
        width: 40px;
        height: 40px;
    }

    .chat-send-btn svg {
        width: 18px;
        height: 18px;
    }

    .message-bubble {
        padding: 0.625rem 0.875rem;
        font-size: 0.875rem;
    }

    .message-time {
        font-size: 0.6875rem;
    }

    /* Photos en 1 colonne */
    .photos-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    /* Progress */
    .progress-section {
        padding: 1rem;
    }

    .progress-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.375rem;
    }

    .progress-title {
        font-size: 0.875rem;
    }

    /* Modal fullscreen sur très petit écran */
    .modal {
        width: 100%;
        height: 100%;
        max-height: 100%;
        margin: 0;
        border-radius: 0;
        padding: 1rem;
    }

    .modal-header {
        margin-bottom: 1rem;
    }

    .modal-title {
        font-size: 1.125rem;
    }

    .modal-close {
        width: 32px;
        height: 32px;
    }

    /* Formulaires */
    .form-group {
        margin-bottom: 1rem;
    }

    .form-label {
        font-size: 0.8125rem;
        margin-bottom: 0.375rem;
    }

    /* Boutons */
    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
        width: 100%;
        justify-content: center;
    }

    .btn-icon {
        width: 36px;
        height: 36px;
    }

    .section-header {
        gap: 0.75rem;
    }

    .section-title {
        font-size: 1.125rem;
    }

    /* Sidebar sur mobile */
    .sidebar {
        width: 85%;
        max-width: 300px;
    }

    .sidebar-header {
        padding: 1.5rem 1rem;
    }

    .sidebar-logo {
        font-size: 1.5rem;
    }

    .nav-item {
        padding: 0.75rem 1rem;
    }

    .sidebar-footer {
        padding: 1rem;
    }

    /* Partner section */
    .partner-section {
        padding: 1.25rem;
    }

    .partner-code {
        font-size: 1.125rem;
        padding: 0.5rem 1rem;
    }
}

/* Animations d'entrée */
.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-surface-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-surface-hover);
}

/* Hide/Show utilities */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* Partner Link Section */
.partner-section {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
}

.partner-section-title {
    font-size: 1.25rem;
    font-family: var(--font-display);
    margin-bottom: 0.5rem;
}

.partner-section-desc {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

.partner-code {
    font-family: monospace;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-surface-light);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    letter-spacing: 2px;
    display: inline-block;
    margin: 1rem 0;
}

.partner-code-input {
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
    font-family: monospace;
    font-weight: 600;
}

.link-partner-form {
    display: flex;
    gap: 0.75rem;
    max-width: 360px;
    margin: 0 auto;
}

.link-partner-form .auth-error {
    margin-top: 1rem;
}

.partner-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.partner-divider::before,
.partner-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* Partner Card (linked partner) */
.partner-card {
    margin-bottom: 1.5rem;
}

.partner-info-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 0;
}

.partner-avatar-large {
    width: 80px;
    height: 80px;
    font-size: 2rem;
    flex-shrink: 0;
}

.partner-details {
    flex: 1;
    min-width: 0;
}

.partner-name {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    font-family: var(--font-display);
}

.partner-email {
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.partner-message-btn {
    flex-shrink: 0;
}

.partner-stats {
    margin-bottom: 1.5rem;
}

.anniversary-card-partner {
    margin-bottom: 1.5rem;
}

.anniversary-content {
    text-align: center;
    padding: 1rem;
}

.anniversary-date {
    font-size: 1.25rem;
    color: var(--color-accent);
    font-family: var(--font-display);
    margin-bottom: 0.5rem;
}

.anniversary-countdown-text {
    color: var(--color-text-secondary);
}

.partner-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 0.5rem;
}

/* Partner Page Responsive */
@media (max-width: 768px) {
    .partner-section {
        padding: 1.5rem;
    }

    .partner-info-row {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .partner-avatar-large {
        width: 72px;
        height: 72px;
        font-size: 1.75rem;
    }

    .partner-details {
        width: 100%;
    }

    .partner-name {
        font-size: 1.25rem;
    }

    .partner-email {
        font-size: 0.875rem;
    }

    .partner-message-btn {
        width: 100%;
        justify-content: center;
    }

    .link-partner-form {
        flex-direction: column;
        max-width: 100%;
    }

    .link-partner-form .btn {
        width: 100%;
    }

    .partner-actions {
        flex-direction: column;
    }

    .partner-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .partner-section {
        padding: 1.25rem;
        border-radius: var(--radius-md);
    }

    .partner-section-title {
        font-size: 1.125rem;
    }

    .partner-section-desc {
        font-size: 0.875rem;
    }

    .partner-code {
        font-size: 1.25rem;
        padding: 0.625rem 1rem;
        letter-spacing: 1.5px;
    }

    .partner-avatar-large {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
    }

    .partner-name {
        font-size: 1.125rem;
    }

    .anniversary-date {
        font-size: 1.125rem;
    }

    .partner-message-btn .btn-text {
        display: none;
    }

    .partner-message-btn {
        width: auto;
        padding: 0.75rem;
    }

    .partner-message-btn svg {
        margin: 0;
    }
}

/* User Dropdown */
.user-dropdown {
    position: absolute;
    bottom: 100%;
    left: 1rem;
    right: 1rem;
    background: var(--color-surface-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    z-index: 50;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.dropdown-item svg {
    width: 18px;
    height: 18px;
}

/* Auth required message */
.auth-required {
    text-align: center;
    padding: 4rem 2rem;
}

.auth-required-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.auth-required-description {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}


/* Amélioration du formulaire d'activité */
.modal-body .form-group:last-child {
    margin-bottom: 0;
}

/* Style pour le bouton copier le code */
.partner-code-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

/* Animation de pulsation pour le badge */
.nav-badge {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ===================================== */
/* Photos Grid / Album                   */
/* ===================================== */

.photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.25rem;
}

.photo-card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

.photo-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
}

.photo-image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
    cursor: pointer;
}

.photo-info {
    padding: 1rem;
}

.photo-caption {
    font-size: 0.9375rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.photo-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.photo-date {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.photo-actions {
    display: flex;
    gap: 0.5rem;
}

.photo-delete-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(239, 83, 80, 0.1);
    border: none;
    color: var(--color-error);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    opacity: 0;
}

.photo-card:hover .photo-delete-btn {
    opacity: 1;
}

.photo-delete-btn:hover {
    background: var(--color-error);
    color: white;
}

/* Lightbox pour les photos */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
}

.lightbox-image {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--radius-md);
}

.lightbox-close {
    position: absolute;
    top: -3rem;
    right: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-surface);
    border: none;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-caption {
    text-align: center;
    margin-top: 1rem;
    color: var(--color-text-secondary);
}

/* Responsive photos */
@media (max-width: 768px) {
    .photos-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .photo-card .photo-delete-btn {
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .photos-grid {
        grid-template-columns: 1fr;
    }
}