/* ==========================================================================
   GLASSMORPHISM DESIGN SYSTEM (Apple & iOS Inspired)
   Responsive for iPhone Mobile, Tablet & Desktop Wide Screens
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Light Mode Glass Tokens */
    --bg-page: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-subtle: rgba(255, 255, 255, 0.5);
    --glass-bg-elevated: rgba(255, 255, 255, 0.88);
    --glass-border: rgba(255, 255, 255, 0.7);
    --glass-border-subtle: rgba(226, 232, 240, 0.8);
    --glass-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(255, 255, 255, 0.5);
    --glass-blur: blur(16px);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-blue: #2563eb;
    --accent-blue-hover: #1d4ed8;
    --accent-blue-soft: rgba(37, 99, 235, 0.1);
}

.dark {
    /* Dark Mode Glass Tokens */
    --bg-page: #0b0f19;
    --glass-bg: rgba(17, 24, 39, 0.72);
    --glass-bg-subtle: rgba(17, 24, 39, 0.45);
    --glass-bg-elevated: rgba(30, 41, 59, 0.85);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-subtle: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.06);
    --glass-blur: blur(20px);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-blue: #3b82f6;
    --accent-blue-hover: #60a5fa;
    --accent-blue-soft: rgba(59, 130, 246, 0.15);
}

/* Base Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Ambient Ambient Gradients (Apple Mesh Glow) */
.glass-mesh-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.glow-orb-1 {
    position: absolute;
    top: -10%;
    left: 15%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 70%);
    filter: blur(70px);
}

.glow-orb-2 {
    position: absolute;
    top: 40%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, rgba(6, 182, 212, 0.05) 50%, transparent 70%);
    filter: blur(80px);
}

.dark .glow-orb-1 {
    background: radial-gradient(circle, rgba(59, 130, 246, 0.22) 0%, rgba(139, 92, 246, 0.12) 50%, transparent 70%);
}
.dark .glow-orb-2 {
    background: radial-gradient(circle, rgba(16, 185, 129, 0.14) 0%, rgba(59, 130, 246, 0.08) 50%, transparent 70%);
}

/* Glassmorphism Card Element */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    box-shadow: var(--glass-shadow);
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, border-color 0.2s ease;
}

.glass-card-hover:hover {
    transform: translateY(-2px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.08);
}

/* Glass Header */
.glass-header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
}

/* Action Buttons (Touch Target 44x44px minimum) */
.glass-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: 44px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
    user-select: none;
}

.glass-btn-primary {
    background: var(--accent-blue);
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}
.glass-btn-primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
}

.glass-btn-secondary {
    background: var(--glass-bg-subtle);
    color: var(--text-primary);
    border: 1px solid var(--glass-border-subtle);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.glass-btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--glass-border);
}

.glass-btn-icon {
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--glass-bg-subtle);
    border: 1px solid var(--glass-border-subtle);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}
.glass-btn-icon:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    border-color: var(--glass-border);
}

/* Badges */
.glass-pill {
    padding: 0.45rem 0.9rem;
    min-height: 38px;
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: 999px;
    background: var(--glass-bg-subtle);
    border: 1px solid var(--glass-border-subtle);
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
}

.glass-pill.active {
    background: var(--accent-blue);
    color: #ffffff;
    border-color: var(--accent-blue);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

/* Format Tag */
.tag-format {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.725rem;
    font-weight: 700;
    border-radius: 8px;
}

.tag-format-pdf {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.25);
}
.tag-format-excel {
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.25);
}
.tag-format-word {
    background: rgba(59, 130, 246, 0.12);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.25);
}
.tag-format-other {
    background: rgba(100, 116, 139, 0.12);
    color: #64748b;
    border: 1px solid rgba(100, 116, 139, 0.25);
}

/* ==========================================================================
   MOBILE-FIRST MODAL (IPHONE / ANDROID SHEET & DESKTOP WINDOW)
   ========================================================================== */
.glass-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-modal-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.glass-modal-sheet {
    background: var(--glass-bg-elevated);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.3);
    width: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* On Desktop: Centered Floating Window */
@media (min-width: 768px) {
    .glass-modal-backdrop {
        padding: 1.5rem;
    }
    .glass-modal-sheet {
        max-width: 1050px;
        max-height: 90vh;
        border-radius: 24px;
        transform: scale(0.95);
    }
    .glass-modal-backdrop.open .glass-modal-sheet {
        transform: scale(1);
    }
}

/* On iPhone & Mobile: Full-Screen Native Sheet */
@media (max-width: 767px) {
    .glass-modal-sheet {
        height: 100vh;
        height: 100dvh;
        max-height: 100dvh;
        border-radius: 0;
        transform: translateY(100%);
        padding-top: env(safe-area-inset-top, 0px);
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }
    .glass-modal-backdrop.open .glass-modal-sheet {
        transform: translateY(0);
    }
}

/* PDF Viewer Canvas Container */
.pdf-viewer-canvas-wrap {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    gap: 1.25rem;
    background: #1e293b;
}

.pdf-page-canvas {
    max-width: 100%;
    height: auto !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    border-radius: 4px;
    background: #ffffff;
}

/* Toast */
.glass-toast {
    position: fixed;
    bottom: max(2rem, env(safe-area-inset-bottom, 2rem));
    right: 1.5rem;
    z-index: 99;
    background: var(--glass-bg-elevated);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: 0 15px 30px -5px rgba(0, 0, 0, 0.2);
    border-radius: 14px;
    padding: 0.75rem 1.15rem;
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    animation: toastSlide 0.2s ease;
}

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