/* =====================================================================
   iOSSpecialist Expert — Master Stylesheet
   Dark Mode · SF Pro · Glassmorphism · 3D · Premium
   ===================================================================== */

/* --- SF Pro Font Integration --- */
@import url('https://fonts.cdnfonts.com/css/sf-pro-display');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- Design Token System --- */
:root {
    /* Colors */
    --ios-blue:        #007AFF;
    --ios-blue-light:  #40a9ff;
    --ios-blue-glow:   rgba(0, 122, 255, 0.35);
    --ios-green:       #34C759;
    --ios-red:         #FF3B30;
    --ios-orange:      #FF9500;
    --ios-purple:      #AF52DE;
    --ios-teal:        #5AC8FA;

    /* Background Layers */
    --bg-void:         #000000;
    --bg-base:         #0a0a0f;
    --bg-surface:      #111118;
    --bg-elevated:     #1c1c28;
    --bg-overlay:      #252535;

    /* Glass */
    --glass-bg:        rgba(255, 255, 255, 0.04);
    --glass-border:    rgba(255, 255, 255, 0.10);
    --glass-bg-hover:  rgba(255, 255, 255, 0.08);
    --glass-blur:      20px;

    /* Text */
    --text-primary:    #FFFFFF;
    --text-secondary:  rgba(255, 255, 255, 0.65);
    --text-tertiary:   rgba(255, 255, 255, 0.38);
    --text-accent:     var(--ios-blue);

    /* Typography */
    --font-display:    'SF Pro Display', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-text:       'SF Pro Text', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono:       'SF Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs:  4px;
    --space-sm:  8px;
    --space-md:  16px;
    --space-lg:  24px;
    --space-xl:  40px;
    --space-2xl: 80px;

    /* Radius */
    --radius-sm:   8px;
    --radius-md:   14px;
    --radius-lg:   22px;
    --radius-xl:   32px;
    --radius-pill: 999px;

    /* Shadows */
    --shadow-sm:    0 2px 8px rgba(0,0,0,0.4);
    --shadow-md:    0 8px 30px rgba(0,0,0,0.5);
    --shadow-lg:    0 20px 60px rgba(0,0,0,0.6);
    --shadow-glow:  0 0 30px var(--ios-blue-glow), 0 0 60px rgba(0,122,255,0.15);
    --shadow-card:  0 8px 32px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.06);

    /* Transitions */
    --ease-smooth:  cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out:     cubic-bezier(0.0, 0, 0.2, 1);
    --dur-fast:     150ms;
    --dur-normal:   300ms;
    --dur-slow:     500ms;

    /* Gradients */
    --grad-blue:    linear-gradient(135deg, #007AFF 0%, #5AC8FA 100%);
    --grad-dark:    linear-gradient(180deg, #0a0a0f 0%, #111118 100%);
    --grad-glass:   linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
    --grad-border:  linear-gradient(135deg, rgba(0,122,255,0.5), rgba(90,200,250,0.2), rgba(175,82,222,0.3));
}

/* --- Reset & Base --- */
*, *::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: var(--font-text);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    padding-top: 170px; /* Accounts for thick desktop header with search bar */
}

/* Noise texture overlay for depth */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.5;
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover { background: var(--ios-blue); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.5rem); }

p { color: var(--text-secondary); line-height: 1.7; }

a {
    color: var(--ios-blue);
    text-decoration: none;
    transition: color var(--dur-fast) var(--ease-smooth);
}
a:hover { color: var(--ios-blue-light); }

/* --- Glass Card System --- */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--shadow-card);
    transition: all var(--dur-normal) var(--ease-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-glass);
    pointer-events: none;
    z-index: 0;
}

.glass-card > * { position: relative; z-index: 1; }

.glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: rgba(0, 122, 255, 0.3);
    box-shadow: var(--shadow-card), var(--shadow-glow);
    transform: translateY(-4px) scale3d(1.01, 1.01, 1.01);
}

/* --- Glow Border Variant --- */
.glass-card-glow {
    position: relative;
}
.glass-card-glow::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: var(--grad-border);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    padding: 1px;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--dur-normal) var(--ease-smooth);
}
.glass-card-glow:hover::after { opacity: 1; }

/* --- Button System --- */
.btn {
    font-family: var(--font-text);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--dur-normal) var(--ease-spring);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: opacity var(--dur-fast);
}
.btn:hover::before { opacity: 1; }
.btn:active { transform: scale(0.96); }

/* Primary Button */
.btn-ios-primary {
    background: var(--ios-blue);
    color: #fff;
    box-shadow: 0 4px 20px var(--ios-blue-glow);
}
.btn-ios-primary:hover {
    background: var(--ios-blue-light);
    color: #fff;
    box-shadow: 0 8px 30px var(--ios-blue-glow);
    transform: translateY(-2px);
}

/* Ghost Button */
.btn-ios-ghost {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}
.btn-ios-ghost:hover {
    background: var(--glass-bg-hover);
    border-color: var(--ios-blue);
    color: var(--ios-blue);
    transform: translateY(-2px);
}

/* --- Form Controls --- */
.form-control, .form-select {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-text);
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: all var(--dur-normal) var(--ease-smooth);
    backdrop-filter: blur(10px);
}
.form-select option {
    background: var(--bg-elevated);
    color: var(--text-primary);
}
.form-control::placeholder { color: var(--text-tertiary); }
.form-control:focus, .form-select:focus {
    outline: none;
    box-shadow: none;
    background: rgba(0, 122, 255, 0.06);
    border-color: var(--ios-blue);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(0,122,255,0.15);
}

/* --- Section Utilities --- */
.section-pad { padding: var(--space-2xl) 0; }
.section-pad-sm { padding: var(--space-xl) 0; }

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.section-eyebrow {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ios-blue);
    margin-bottom: 12px;
    display: block;
}

.section-sub {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 12px auto 0;
}

/* --- Badge System --- */
.ios-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.ios-badge-blue   { background: rgba(0,122,255,0.15); color: var(--ios-blue); border: 1px solid rgba(0,122,255,0.25); }
.ios-badge-green  { background: rgba(52,199,89,0.15); color: var(--ios-green); border: 1px solid rgba(52,199,89,0.25); }
.ios-badge-orange { background: rgba(255,149,0,0.15); color: var(--ios-orange); border: 1px solid rgba(255,149,0,0.25); }
.ios-badge-red    { background: rgba(255,59,48,0.15); color: var(--ios-red); border: 1px solid rgba(255,59,48,0.25); }

/* Pulse dot */
.pulse-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    display: inline-block;
    animation: pulse-ring 1.5s ease infinite;
}
.pulse-dot.green { background: var(--ios-green); box-shadow: 0 0 0 0 rgba(52,199,89,0.5); }
.pulse-dot.blue  { background: var(--ios-blue); box-shadow: 0 0 0 0 rgba(0,122,255,0.5); }

@keyframes pulse-ring {
    0%   { box-shadow: 0 0 0 0 currentColor; }
    70%  { box-shadow: 0 0 0 6px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

/* --- Gradient Text --- */
.text-gradient {
    background: var(--grad-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Stat Counter Cards --- */
.stat-card {
    text-align: center;
    padding: var(--space-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(var(--glass-blur));
}
.stat-card .stat-number {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    line-height: 1;
}
.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 6px;
    font-weight: 500;
}

/* --- Tables --- */
.ios-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}
.ios-table thead th {
    background: rgba(0,122,255,0.08);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 14px 20px;
    border-bottom: 1px solid var(--glass-border);
}
.ios-table tbody td {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    color: var(--text-primary);
    font-size: 0.9rem;
    vertical-align: middle;
}
.ios-table tbody tr {
    transition: background var(--dur-fast) var(--ease-smooth);
}
.ios-table tbody tr:hover {
    background: rgba(255,255,255,0.03);
}

/* --- Dropdown Menus --- */
.dropdown-menu {
    background: var(--bg-elevated);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    padding: 8px;
    min-width: 200px;
}
.dropdown-item {
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 0.9rem;
    transition: all var(--dur-fast) var(--ease-smooth);
    display: flex;
    align-items: center;
    gap: 10px;
}
.dropdown-item:hover {
    background: rgba(0,122,255,0.1);
    color: var(--ios-blue);
}
.dropdown-item.text-danger { color: var(--ios-red) !important; }
.dropdown-item.text-danger:hover { background: rgba(255,59,48,0.1); }
.dropdown-divider { border-color: var(--glass-border); margin: 4px 0; }

/* --- Modal --- */
.modal-content {
    background: var(--bg-elevated);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
}
.modal-header {
    border-bottom: 1px solid var(--glass-border);
    padding: 24px 28px;
}
.modal-body { padding: 24px 28px; }
.modal-footer {
    border-top: 1px solid var(--glass-border);
    padding: 16px 28px;
}
.btn-close { filter: invert(1); }

/* --- Offcanvas (Mobile Menu) --- */
.offcanvas {
    background: var(--bg-surface);
    border-right: 1px solid var(--glass-border);
}

/* --- Alert / Toast --- */
.alert {
    border-radius: var(--radius-md);
    border: 1px solid;
    padding: 14px 18px;
}
.alert-success { background: rgba(52,199,89,0.1); border-color: rgba(52,199,89,0.25); color: var(--ios-green); }
.alert-danger  { background: rgba(255,59,48,0.1);  border-color: rgba(255,59,48,0.25);  color: var(--ios-red); }
.alert-info    { background: rgba(0,122,255,0.1);   border-color: rgba(0,122,255,0.25);   color: var(--ios-blue); }
.alert-warning { background: rgba(255,149,0,0.1); border-color: rgba(255,149,0,0.25); color: var(--ios-orange); }

/* --- List Groups --- */
.list-group-item {
    background: transparent;
    border-color: var(--glass-border);
    color: var(--text-secondary);
    transition: all var(--dur-fast) var(--ease-smooth);
}
.list-group-item:hover {
    background: rgba(0,122,255,0.06);
    color: var(--ios-blue);
}

/* --- Pagination --- */
.page-item .page-link {
    background: var(--glass-bg);
    border-color: var(--glass-border);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    margin: 0 2px;
}
.page-item.active .page-link {
    background: var(--ios-blue);
    border-color: var(--ios-blue);
    color: #fff;
}
.page-item .page-link:hover {
    background: rgba(0,122,255,0.1);
    color: var(--ios-blue);
}

/* --- Powered By Badge --- */
.powered-by {
    position: fixed;
    bottom: 20px;
    right: 20px;
    color: rgba(255,255,255,0.2);
    padding: 5px 15px;
    border-radius: var(--radius-pill);
    font-size: 10px;
    z-index: 998;
    pointer-events: none;
    font-family: var(--font-mono);
}

/* --- Input Group Fix for Dark Theme --- */
.input-group-text {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

/* --- Utility Classes --- */
.text-ios-blue   { color: var(--ios-blue) !important; }
.text-ios-green  { color: var(--ios-green) !important; }
.text-ios-red    { color: var(--ios-red) !important; }
.text-ios-orange { color: var(--ios-orange) !important; }
.text-muted      { color: var(--text-secondary) !important; }
.text-primary-custom { color: var(--text-primary) !important; }

.bg-glass     { background: var(--glass-bg); }
.bg-surface   { background: var(--bg-surface); }
.bg-elevated  { background: var(--bg-elevated); }
.bg-base      { background: var(--bg-base); }

.border-glass { border: 1px solid var(--glass-border); }
.border-glow  { border: 1px solid rgba(0,122,255,0.3); }

.rounded-ios { border-radius: var(--radius-lg); }
.rounded-ios-sm { border-radius: var(--radius-md); }

.shadow-glow { box-shadow: var(--shadow-glow); }
.shadow-card { box-shadow: var(--shadow-card); }

/* =====================================================================
   FLOATING TELEGRAM BUTTON
   ===================================================================== */
.floating-telegram-btn {
    position: fixed;
    bottom: 60px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #0088cc;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 8px 24px rgba(0, 136, 204, 0.4);
    z-index: 9999;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: pulse-telegram 2s infinite;
}
.floating-telegram-btn:hover {
    transform: scale(1.15) translateY(-5px);
    color: #fff;
    box-shadow: 0 12px 28px rgba(0, 136, 204, 0.6);
}

@keyframes pulse-telegram {
    0% { box-shadow: 0 0 0 0 rgba(0, 136, 204, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(0, 136, 204, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 136, 204, 0); }
}

@media (max-width: 767px) {
    .floating-telegram-btn {
        bottom: 50px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}