/* ==========================================================================
   PicSelect Clone SaaS V2 - Premium Design System Stylesheet
   Phase C Step C1 & C2 & C3 - Enhanced UI Polish
   ========================================================================== */

:root {
    --ps-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --ps-font-heading: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Light Theme Palette */
    --ps-primary: #4f46e5;
    --ps-primary-hover: #4338ca;
    --ps-indigo-gradient: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    --ps-emerald-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --ps-amber-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --ps-rose-gradient: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
    
    --ps-bg-body: #f8fafc;
    --ps-bg-card: #ffffff;
    --ps-bg-sidebar: #0f172a;
    --ps-bg-sidebar-hover: #1e293b;
    --ps-border-color: #e2e8f0;
    
    --ps-text-main: #0f172a;
    --ps-text-muted: #64748b;
    --ps-text-inverse: #ffffff;

    --ps-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04);
    --ps-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
    --ps-shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.08);
    --ps-shadow-glow: 0 10px 25px rgba(79, 70, 229, 0.25);
    
    --ps-radius-sm: 8px;
    --ps-radius-md: 14px;
    --ps-radius-lg: 20px;
    --ps-sidebar-width: 260px;
}

/* Dark Mode Overrides */
[data-theme="dark"], body.dark-mode {
    --ps-bg-body: #0b0f19;
    --ps-bg-card: #151c2c;
    --ps-bg-sidebar: #090d16;
    --ps-bg-sidebar-hover: #1e293b;
    --ps-border-color: #263147;
    
    --ps-text-main: #f1f5f9;
    --ps-text-muted: #94a3b8;
    --ps-text-inverse: #ffffff;

    --ps-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --ps-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --ps-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);
}

/* Typography Base */
body {
    font-family: var(--ps-font-sans);
    background-color: var(--ps-bg-body);
    color: var(--ps-text-main);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--ps-font-heading);
    letter-spacing: -0.02em;
    font-weight: 700;
}

/* Top Navbar */
.top-navbar {
    background-color: var(--ps-bg-card);
    border-bottom: 1px solid var(--ps-border-color);
    padding: 0.85rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--ps-shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.toggle-sidebar-btn {
    background: transparent;
    border: 1px solid var(--ps-border-color);
    width: 38px;
    height: 38px;
    border-radius: var(--ps-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ps-text-main);
    cursor: pointer;
    font-size: 1.25rem;
    transition: all 0.2s ease;
}

.toggle-sidebar-btn:hover {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--ps-primary);
    border-color: var(--ps-primary);
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--ps-indigo-gradient);
    color: #ffffff;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
}

.navbar-user-dropdown .dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

/* Glassmorphism & Elevation Cards */
.card, .glass-card {
    background-color: var(--ps-bg-card);
    border: 1px solid var(--ps-border-color);
    border-radius: var(--ps-radius-md) !important;
    box-shadow: var(--ps-shadow-md);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.25s ease;
}

.card-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--ps-shadow-lg) !important;
    border-color: rgba(99, 102, 241, 0.3);
}

.glassmorphism {
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

[data-theme="dark"] .glassmorphism {
    background: rgba(21, 28, 44, 0.85) !important;
}

/* Stat Cards Component */
.stat-card {
    background-color: var(--ps-bg-card);
    border: 1px solid var(--ps-border-color);
    border-radius: var(--ps-radius-md) !important;
    padding: 1.25rem;
    box-shadow: var(--ps-shadow-sm);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--ps-shadow-md) !important;
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.stat-title {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--ps-text-muted);
    margin: 0;
}

.stat-value {
    font-family: var(--ps-font-heading);
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--ps-text-main);
    line-height: 1.2;
    margin-bottom: 0.35rem;
}

.stat-subtext {
    font-size: 0.775rem;
    color: var(--ps-text-muted);
}

.stat-icon-box {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}

.stat-icon-box.icon-blue { background: rgba(99, 102, 241, 0.12); color: #6366f1; }
.stat-icon-box.icon-cyan { background: rgba(6, 182, 212, 0.12); color: #06b6d4; }
.stat-icon-box.icon-amber { background: rgba(245, 158, 11, 0.12); color: #f59e0b; }
.stat-icon-box.icon-purple { background: rgba(139, 92, 246, 0.12); color: #8b5cf6; }
.stat-icon-box.icon-emerald { background: rgba(16, 185, 129, 0.12); color: #10b981; }

.card-table-wrapper {
    background-color: var(--ps-bg-card);
    border: 1px solid var(--ps-border-color);
    border-radius: var(--ps-radius-md) !important;
    box-shadow: var(--ps-shadow-sm);
    overflow: hidden;
}

.card-table-header {
    padding: 1.25rem 1.5rem;
    background-color: var(--ps-bg-card);
    border-bottom: 1px solid var(--ps-border-color);
}

/* Modern Gradient Buttons */
.btn-indigo, .btn-primary {
    background: var(--ps-indigo-gradient) !important;
    border: none !important;
    color: #ffffff !important;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
    transition: all 0.2s ease-in-out;
}

.btn-indigo:hover, .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--ps-shadow-glow) !important;
    opacity: 0.95;
}

.btn-emerald, .btn-success {
    background: var(--ps-emerald-gradient) !important;
    border: none !important;
    color: #ffffff !important;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.25);
    transition: all 0.2s ease-in-out;
}

.btn-emerald:hover, .btn-success:hover {
    transform: translateY(-1px);
    opacity: 0.95;
}

.btn-rounded {
    border-radius: 9999px !important;
}

/* Modern Badges */
.badge-gradient-indigo {
    background: var(--ps-indigo-gradient);
    color: #ffffff;
}

.badge-gradient-emerald {
    background: var(--ps-emerald-gradient);
    color: #ffffff;
}

.badge-gradient-amber {
    background: var(--ps-amber-gradient);
    color: #ffffff;
}

/* Background Gradient Utility Classes */
.bg-gradient-indigo {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%) !important;
    color: #ffffff !important;
}

.bg-gradient-emerald {
    background: linear-gradient(135deg, #064e3b 0%, #047857 50%, #10b981 100%) !important;
    color: #ffffff !important;
}

.bg-gradient-purple {
    background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 50%, #8b5cf6 100%) !important;
    color: #ffffff !important;
}

.bg-gradient-dark {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%) !important;
    color: #ffffff !important;
}

/* Layout Wrapper & Sidebar */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.sidebar {
    width: var(--ps-sidebar-width);
    background-color: var(--ps-bg-sidebar);
    color: #f8fafc;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1040;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 1.5rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--ps-font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand-icon {
    width: 40px;
    height: 40px;
    background: var(--ps-indigo-gradient);
    border-radius: var(--ps-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.sidebar-menu {
    padding: 1.25rem 0.75rem;
    list-style: none;
    margin: 0;
    flex-grow: 1;
    overflow-y: auto;
}

.sidebar-heading {
    padding: 1rem 0.75rem 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    margin: 0;
}

.sidebar-item {
    margin-bottom: 0.25rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    border-radius: var(--ps-radius-sm);
    transition: all 0.2s ease;
}

.sidebar-link:hover {
    color: #ffffff;
    background-color: var(--ps-bg-sidebar-hover);
    transform: translateX(3px);
}

.sidebar-link.active {
    color: #ffffff;
    background: var(--ps-indigo-gradient);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.main-content {
    margin-left: var(--ps-sidebar-width);
    width: calc(100% - var(--ps-sidebar-width));
    min-height: 100vh;
    transition: all 0.3s ease;
}

.page-body {
    padding: 2rem;
}

/* Gallery Photo Grid & Fullscreen Viewer Styles */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.gallery-card {
    position: relative;
    border-radius: var(--ps-radius-md);
    overflow: hidden;
    background-color: #000;
    box-shadow: var(--ps-shadow-md);
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
}

.gallery-card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: var(--ps-shadow-lg);
}

.gallery-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.gallery-card:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.8) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.25s ease;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 1.25rem;
}

.gallery-card:hover .gallery-overlay, .gallery-card.selected .gallery-overlay {
    opacity: 1;
}

.selection-heart-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 1.25rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-card.selected .selection-heart-btn, .selection-heart-btn.active {
    background: var(--ps-rose-gradient);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(244, 63, 94, 0.4);
    transform: scale(1.1);
}

/* Sticky Action Bar for Client Selection */
.sticky-action-bar {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    width: 90%;
    max-width: 680px;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 9999px;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
    color: #ffffff;
}

/* Mobile Responsiveness */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        width: 100%;
    }
}