/* ==========================================================================
   MYCLOUD - ULTRA-PREMIUM SKY BLUE & WHITE GLASSMORPHISM DESIGN SYSTEM
   Award-Winning, Smooth Animations, Responsive, Zero Framework Bloat
   ========================================================================== */

:root {
    /* Brand Sky Blue Spectrum */
    --sky-50: #f0f9ff;
    --sky-100: #e0f2fe;
    --sky-200: #bae6fd;
    --sky-300: #7dd3fc;
    --sky-400: #38bdf8;
    --sky-500: #0ea5e9;
    --sky-600: #0284c7;
    --sky-700: #0369a1;
    --sky-800: #075985;
    --sky-900: #0c4a6e;
    
    /* Primary Gradient Accents */
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --primary-gradient: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
    --primary-gradient-hover: linear-gradient(135deg, #0369a1 0%, #0ea5e9 100%);
    --sky-glow: 0 8px 24px -2px rgba(14, 165, 233, 0.38);

    /* Glass Surfaces */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-subtle: rgba(255, 255, 255, 0.55);
    --glass-bg-hover: rgba(255, 255, 255, 0.92);
    --glass-card-bg: rgba(255, 255, 255, 0.68);
    --glass-card-hover: rgba(255, 255, 255, 0.94);
    --glass-border: rgba(255, 255, 255, 0.85);
    --glass-border-subtle: rgba(186, 230, 253, 0.55);
    --glass-border-hover: rgba(56, 189, 248, 0.55);
    
    /* Refraction & Blur */
    --glass-blur: blur(20px) saturate(180%);
    --glass-blur-sm: blur(12px) saturate(160%);
    --glass-blur-lg: blur(30px) saturate(190%);

    /* Depth Shadows */
    --shadow-sm: 0 2px 10px rgba(14, 165, 233, 0.06);
    --shadow-md: 0 8px 26px -4px rgba(14, 165, 233, 0.14), 0 2px 8px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 16px 40px -6px rgba(14, 165, 233, 0.2), 0 4px 14px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 24px 54px -10px rgba(14, 165, 233, 0.28), 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-inner: inset 0 1px 1px 0 rgba(255, 255, 255, 0.95);

    /* Text & Legibility */
    --text-main: #0f172a;
    --text-body: #334155;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;

    /* Semantic States */
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --danger-border: rgba(239, 68, 68, 0.25);
    --success: #10b981;
    --success-light: #d1fae5;
    --success-border: rgba(16, 185, 129, 0.25);
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --warning-border: rgba(245, 158, 11, 0.25);

    /* Radii */
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    /* Spring Physics Motion */
    --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s var(--ease-spring);
    --transition-fast: all 0.18s var(--ease-smooth);
}

/* ==========================================================================
   RESET & FOUNDATIONS
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: radial-gradient(circle at 15% 15%, #f0f9ff 0%, #ffffff 40%, #e0f2fe 80%, #bae6fd 100%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

::-webkit-scrollbar-track {
    background: rgba(224, 242, 254, 0.35);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--sky-300), var(--sky-500));
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--sky-600);
}

/* ==========================================================================
   ATMOSPHERIC FLOATING AMBIENT ORBS
   ========================================================================== */

.orb-container {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.65;
    will-change: transform;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #7dd3fc 0%, rgba(56, 189, 248, 0.45) 55%, rgba(2, 132, 199, 0) 80%);
    top: -140px;
    left: -120px;
    animation: floatOrb1 22s ease-in-out infinite alternate;
}

.orb-2 {
    width: 540px;
    height: 540px;
    background: radial-gradient(circle, #bae6fd 0%, rgba(14, 165, 233, 0.38) 60%, rgba(56, 189, 248, 0) 85%);
    bottom: -140px;
    right: -100px;
    animation: floatOrb2 26s ease-in-out infinite alternate;
    animation-delay: -6s;
}

.orb-3 {
    width: 460px;
    height: 460px;
    background: radial-gradient(circle, #e0f2fe 0%, rgba(125, 211, 252, 0.45) 60%, rgba(224, 242, 254, 0) 80%);
    top: 35%;
    left: 45%;
    animation: floatOrb3 20s ease-in-out infinite alternate;
    animation-delay: -11s;
}

.orb-4 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #38bdf8 0%, rgba(186, 230, 253, 0.3) 65%, rgba(255, 255, 255, 0) 85%);
    bottom: 18%;
    left: 8%;
    animation: floatOrb4 24s ease-in-out infinite alternate;
    animation-delay: -16s;
}

@keyframes floatOrb1 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(65px, 80px) scale(1.12); }
    100% { transform: translate(-45px, 50px) scale(0.95); }
}

@keyframes floatOrb2 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-70px, -65px) scale(1.08); }
    100% { transform: translate(55px, -40px) scale(0.96); }
}

@keyframes floatOrb3 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, -70px) scale(1.14); }
    100% { transform: translate(-60px, 60px) scale(0.92); }
}

@keyframes floatOrb4 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-50px, 60px) scale(1.1); }
    100% { transform: translate(45px, -50px) scale(0.94); }
}

/* ==========================================================================
   GLASS PANELS & CARDS
   ========================================================================== */

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md), var(--shadow-inner);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.glass-panel:hover {
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-inner);
}

.glass-card {
    background: var(--glass-card-bg);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm), var(--shadow-inner);
    transition: var(--transition);
    position: relative;
}

.glass-card:hover {
    background: var(--glass-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--sky-300);
}

/* ==========================================================================
   BUTTONS & ACTIONS
   ========================================================================== */

.btn-glass {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid transparent;
    user-select: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-glass:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: var(--sky-glow);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    background: var(--primary-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 28px -2px rgba(14, 165, 233, 0.48);
    color: #ffffff;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.85);
    color: var(--sky-700);
    border: 1px solid var(--sky-200);
    backdrop-filter: var(--glass-blur-sm);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: #ffffff;
    border-color: var(--sky-400);
    color: var(--sky-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.12);
    color: var(--danger);
    border: 1px solid var(--danger-border);
}

.btn-danger:hover {
    background: var(--danger);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -2px rgba(239, 68, 68, 0.4);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--sky-200);
    color: var(--text-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-icon:hover {
    background: #ffffff;
    color: var(--primary);
    border-color: var(--sky-400);
    transform: scale(1.08);
    box-shadow: var(--shadow-sm);
}

.btn-icon.active {
    background: var(--sky-100);
    color: var(--primary);
    border-color: var(--sky-300);
}

/* ==========================================================================
   INPUTS & FORM CONTROLS
   ========================================================================== */

.glass-input {
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid var(--glass-border-subtle);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    color: var(--text-main);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    backdrop-filter: var(--glass-blur-sm);
    width: 100%;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.glass-input::placeholder {
    color: var(--text-light);
}

.glass-input:focus {
    background: #ffffff;
    border-color: var(--sky-500);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.18), inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.input-icon-wrap {
    position: relative;
    width: 100%;
}

.input-icon-wrap i.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sky-400);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition-fast);
}

.input-icon-wrap .glass-input {
    padding-left: 46px;
}

.input-icon-wrap .glass-input:focus ~ i.input-icon {
    color: var(--primary);
}

.input-toggle-btn {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
    transition: var(--transition-fast);
}

.input-toggle-btn:hover {
    color: var(--primary);
}

/* ==========================================================================
   BADGES & PILLS
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    user-select: none;
}

.badge-sky {
    background: var(--sky-100);
    color: var(--sky-700);
    border: 1px solid var(--sky-200);
}

.badge-admin {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(14, 165, 233, 0.3);
}

.badge-success {
    background: var(--success-light);
    color: #065f46;
    border: 1px solid var(--success-border);
}

.badge-danger {
    background: var(--danger-light);
    color: #991b1b;
    border: 1px solid var(--danger-border);
}

.badge-warning {
    background: var(--warning-light);
    color: #92400e;
    border: 1px solid var(--warning-border);
}

/* ==========================================================================
   NAVIGATION BAR (STICKY FROSTED GLASS HEADER)
   ========================================================================== */

.navbar-glass {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 12px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    transition: var(--transition);
}

.brand-logo:hover {
    transform: scale(1.02);
}

.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-md);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: var(--sky-glow);
    font-size: 1.25rem;
    transition: var(--transition);
}

.brand-logo:hover .brand-icon {
    transform: rotate(-8deg) scale(1.08);
}

.brand-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-body);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.nav-item i {
    color: var(--sky-500);
    transition: var(--transition-fast);
}

.nav-item:hover {
    color: var(--primary);
    background: var(--sky-100);
}

.nav-item:hover i {
    transform: scale(1.15);
}

.nav-item.active {
    color: var(--primary);
    background: var(--sky-100);
    font-weight: 700;
    box-shadow: inset 0 0 0 1px var(--sky-200);
}

.user-profile-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.85);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    border: 1px solid var(--sky-200);
    box-shadow: var(--shadow-sm);
}

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.35rem;
    color: var(--text-main);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.hamburger-btn:hover {
    background: var(--sky-100);
    color: var(--primary);
}

.mobile-nav-drawer {
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 18px 24px 24px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s var(--ease-spring);
}

.mobile-nav-drawer.open {
    display: flex;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   TOAST NOTIFICATIONS (FROSTED GLASS ALERTS)
   ========================================================================== */

.flash-container {
    position: fixed;
    top: 85px;
    right: 28px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 420px;
    pointer-events: none;
}

.alert-glass {
    pointer-events: auto;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    position: relative;
    overflow: hidden;
    animation: slideInRight 0.35s var(--ease-spring);
    transition: all 0.3s ease;
}

.alert-glass::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    animation: toastCountdown 4.5s linear forwards;
}

@keyframes toastCountdown {
    from { width: 100%; }
    to { width: 0%; }
}

.alert-glass.success { border-left: 5px solid var(--success); }
.alert-glass.success::after { background: var(--success); }
.alert-glass.danger { border-left: 5px solid var(--danger); }
.alert-glass.danger::after { background: var(--danger); }
.alert-glass.warning { border-left: 5px solid var(--warning); }
.alert-glass.warning::after { background: var(--warning); }
.alert-glass.info { border-left: 5px solid var(--sky-500); }
.alert-glass.info::after { background: var(--sky-500); }

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   MODAL DIALOGS (BLUR GLASS OVERLAY & SPRING PHYSICS)
   ========================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    padding: 20px;
}

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

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: var(--glass-blur-lg);
    -webkit-backdrop-filter: var(--glass-blur-lg);
    border: 1px solid rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 540px;
    padding: 32px;
    position: relative;
    transform: scale(0.92) translateY(15px);
    transition: transform 0.3s var(--ease-spring);
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--sky-100);
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close {
    background: rgba(240, 249, 255, 0.8);
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--danger-light);
    color: var(--danger);
    transform: rotate(90deg);
}

/* Large Quick Preview Modal */
.modal-content.preview-modal-content {
    max-width: 900px;
    padding: 24px;
}

.preview-body-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 360px;
    max-height: 65vh;
    overflow: auto;
    background: rgba(240, 249, 255, 0.5);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border: 1px solid var(--sky-200);
    padding: 16px;
}

.preview-body-container img {
    max-width: 100%;
    max-height: 58vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

.preview-body-container video {
    max-width: 100%;
    max-height: 58vh;
    border-radius: var(--radius-sm);
    outline: none;
}

.preview-body-container audio {
    width: 85%;
    outline: none;
}

.preview-text-box {
    width: 100%;
    max-height: 55vh;
    overflow-y: auto;
    background: #ffffff;
    padding: 20px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    color: var(--text-main);
    white-space: pre-wrap;
    text-align: left;
}

/* ==========================================================================
   TENANT CLOUD DASHBOARD LAYOUT & SIDEBAR
   ========================================================================== */

.dashboard-layout {
    display: flex;
    min-height: calc(100vh - 72px);
    max-width: 1600px;
    margin: 0 auto;
}

.sidebar-glass {
    width: 300px;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
}

.storage-card {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--sky-200);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}

.storage-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.storage-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    font-weight: 800;
    color: var(--sky-600);
    letter-spacing: 0.05em;
}

.storage-value {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.storage-meter {
    height: 8px;
    width: 100%;
    background: var(--sky-100);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 12px 0 8px;
}

.storage-meter-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    transition: width 0.6s var(--ease-spring);
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-body);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    transition: var(--transition);
}

.sidebar-link .link-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-link i {
    font-size: 1.15rem;
    color: var(--sky-500);
    transition: var(--transition-fast);
}

.sidebar-link:hover {
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary);
    transform: translateX(4px);
}

.sidebar-link:hover i {
    transform: scale(1.15);
}

.sidebar-link.active {
    background: var(--sky-100);
    color: var(--primary);
    font-weight: 700;
    box-shadow: inset 0 0 0 1px var(--sky-200);
}

.dashboard-main {
    flex: 1;
    padding: 32px 40px;
    overflow-y: auto;
}

/* ==========================================================================
   INTERACTIVE DRAG & DROP UPLOAD ZONE
   ========================================================================== */

.dropzone-glass {
    border: 2px dashed rgba(56, 189, 248, 0.7);
    background: rgba(240, 249, 255, 0.6);
    backdrop-filter: var(--glass-blur-sm);
    border-radius: var(--radius-lg);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.dropzone-glass:hover, .dropzone-glass.dragover {
    border-color: var(--primary);
    background: rgba(224, 242, 254, 0.88);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(14, 165, 233, 0.2);
}

.dropzone-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sky-500);
    font-size: 2.2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.dropzone-glass:hover .dropzone-icon,
.dropzone-glass.dragover .dropzone-icon {
    transform: scale(1.12) translateY(-4px);
    color: var(--primary);
    box-shadow: var(--sky-glow);
}

.upload-progress-wrapper {
    margin-top: 24px;
    display: none;
    text-align: left;
}

.progress-bar-bg {
    width: 100%;
    height: 12px;
    background: rgba(224, 242, 254, 0.9);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #0284c7, #38bdf8, #0ea5e9, #0284c7);
    background-size: 200% 100%;
    animation: shimmerProgress 2s linear infinite;
    transition: width 0.25s ease;
    border-radius: var(--radius-full);
}

@keyframes shimmerProgress {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ==========================================================================
   FILES GRID VIEW & CARDS
   ========================================================================== */

.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 22px;
    margin-top: 26px;
}

.file-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: var(--glass-blur-sm);
    -webkit-backdrop-filter: var(--glass-blur-sm);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.file-card:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--sky-300);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.file-thumbnail {
    height: 120px;
    background: rgba(240, 249, 255, 0.7);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 14px;
    position: relative;
    border: 1px solid rgba(224, 242, 254, 0.8);
}

.file-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s var(--ease-spring);
}

.file-card:hover .file-thumbnail img {
    transform: scale(1.08);
}

.file-thumbnail i {
    font-size: 3.2rem;
    color: var(--sky-500);
    transition: transform 0.3s var(--ease-spring);
}

.file-card:hover .file-thumbnail i {
    transform: scale(1.12);
}

.file-title {
    font-weight: 700;
    font-size: 0.94rem;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.file-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.file-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid rgba(224, 242, 254, 0.85);
}

.action-btn {
    background: rgba(240, 249, 255, 0.85);
    border: 1px solid var(--sky-200);
    border-radius: var(--radius-xs);
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-fast);
}

.action-btn:hover {
    background: var(--sky-100);
    color: var(--primary);
    border-color: var(--sky-400);
    transform: scale(1.1);
}

.action-btn.delete-btn:hover {
    background: var(--danger-light);
    color: var(--danger);
    border-color: var(--danger-border);
}

/* ==========================================================================
   FILES LIST / TABLE VIEW
   ========================================================================== */

.files-list-view {
    display: none;
    margin-top: 24px;
}

.files-list-view.active {
    display: block;
}

.files-grid.hidden {
    display: none;
}

.glass-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
    font-size: 0.92rem;
}

.glass-table th {
    padding: 14px 18px;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--sky-200);
}

.glass-table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(224, 242, 254, 0.7);
    color: var(--text-body);
    vertical-align: middle;
}

.glass-table tr:hover td {
    background: rgba(255, 255, 255, 0.88);
}

/* ==========================================================================
   HERO & LANDING PAGE EXCLUSIVES
   ========================================================================== */

.hero-section {
    max-width: 1240px;
    margin: 0 auto;
    padding: 80px 24px 60px;
    text-align: center;
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    color: var(--text-main);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-body);
    max-width: 780px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 48px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: var(--glass-blur-sm);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    text-align: left;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--sky-300);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

/* ==========================================================================
   ANIMATIONS & EFFECTS
   ========================================================================== */

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s var(--ease-spring) forwards;
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 15px rgba(14, 165, 233, 0.25); }
    50% { box-shadow: 0 0 32px rgba(56, 189, 248, 0.6); }
}

.pulse-glow {
    animation: pulseGlow 3s infinite;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */

@media (max-width: 1024px) {
    .dashboard-layout {
        flex-direction: column;
    }
    
    .sidebar-glass {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
        padding: 20px;
    }

    .dashboard-main {
        padding: 24px 20px;
    }

    .hero-title {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hamburger-btn {
        display: block;
    }

    .hero-title {
        font-size: 2.3rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .files-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 14px;
    }

    .file-thumbnail {
        height: 95px;
    }

    .flash-container {
        right: 14px;
        left: 14px;
        max-width: none;
    }

    .modal-content {
        padding: 24px 18px;
    }
}