/* ============================================ */
/* THEME 2026 — LIQUID GLASS (LIGHT VERSION)   */
/* Современный светлый дизайн с эффектами 2026 */
/* ============================================ */

:root {
    /* === СВЕТЛАЯ ПАЛИТРА 2026 === */
    --bg-deep: #FFFFFF;
    --bg-base: #F8FAFC;
    --bg-surface: rgba(255, 255, 255, 0.85);
    --bg-glass: rgba(248, 250, 252, 0.75);
    
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #94A3B8;
    
    --accent: #22D3EE;              /* Cyan 400 — акцент 2026 */
    --accent-glow: #67E8F9;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    /* === GLASS + DEPTH === */
    --glass-blur: blur(20px);
    --glass-border: rgba(148, 163, 184, 0.2);
    --depth-shadow: 
        0 8px 32px -12px rgba(0, 0, 0, 0.1),
        0 2px 8px -2px rgba(34, 211, 238, 0.15);
    
    /* === АНИМАЦИИ 2026 === */
    --spring: cubic-bezier(0.34, 1.56, 0.64, 1); /* пружина */
    --transition: 280ms var(--spring);
    
    /* Layout */
    --safe-area-top: env(safe-area-inset-top);
    --safe-area-bottom: env(safe-area-inset-bottom);
    --header-height: 44px;
    --bottom-nav-height: 83px;
}

/* === БАЗОВЫЕ СТИЛИ === */
body {
    background: var(--bg-base) !important;
    color: var(--text-primary) !important;
    font-family: "SF Pro Display", -apple-system, system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* === GLASS КАРТОЧКИ === */
.card {
    background: var(--bg-glass) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 20px !important;
    backdrop-filter: var(--glass-blur) !important;
    -webkit-backdrop-filter: var(--glass-blur) !important;
    box-shadow: var(--depth-shadow) !important;
    transition: transform var(--transition), 
                box-shadow var(--transition) !important;
    contain: layout style paint; /* GPU ускорение! */
}

.card:hover {
    transform: translateY(-4px) scale(1.01) !important;
    box-shadow: 
        0 20px 40px -15px rgba(34, 211, 238, 0.25),
        0 8px 24px -8px rgba(0, 0, 0, 0.12) !important;
}

/* === HEADER === */
.app-header {
    background: var(--bg-glass) !important;
    backdrop-filter: var(--glass-blur) !important;
    border-bottom: 1px solid var(--glass-border) !important;
    box-shadow: 0 4px 16px -8px rgba(0, 0, 0, 0.08) !important;
}

.header-title {
    background: linear-gradient(135deg, #22D3EE, #67E8F9) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    font-weight: 800 !important;
}

/* === BOTTOM NAV === */
.bottom-nav {
    background: var(--bg-glass) !important;
    backdrop-filter: var(--glass-blur) !important;
    border-top: 1px solid var(--glass-border) !important;
    box-shadow: 0 -4px 16px -8px rgba(0, 0, 0, 0.08) !important;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, #22D3EE, #67E8F9);
    border-radius: 0 0 3px 3px;
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
}

.nav-item.active .nav-icon {
    stroke: #22D3EE !important;
    filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.4));
}

.nav-item.active .nav-label {
    color: #22D3EE !important;
    font-weight: 700 !important;
}

/* === КНОПКИ С НЕОНОВЫМ СВЕЧЕНИЕМ === */
.btn-primary {
    background: linear-gradient(135deg, #22D3EE, #67E8F9) !important;
    color: #0F172A !important;
    border: none !important;
    border-radius: 9999px !important;
    font-weight: 700 !important;
    box-shadow: 
        0 0 20px rgba(34, 211, 238, 0.4),
        0 4px 12px rgba(34, 211, 238, 0.3) !important;
    transition: all var(--transition) !important;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.3) 0%,
        transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: scale(0.96) !important;
    box-shadow: 
        0 0 15px rgba(34, 211, 238, 0.6),
        0 2px 8px rgba(34, 211, 238, 0.4) !important;
}

.btn-secondary {
    background: var(--bg-surface) !important;
    color: var(--text-primary) !important;
    border: 1.5px solid var(--glass-border) !important;
    border-radius: 9999px !important;
    font-weight: 600 !important;
    transition: all var(--transition) !important;
}

.btn-secondary:hover {
    background: rgba(34, 211, 238, 0.08) !important;
    border-color: #22D3EE !important;
}

/* === PRODUCT CARDS === */
.product-card {
    position: relative;
    overflow: hidden;
    transition: all var(--transition) !important;
}

.product-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(34, 211, 238, 0.12) 0%,
        transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

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

.product-card:active {
    transform: scale(0.98);
}

/* === INPUTS === */
input, select, textarea {
    background: var(--bg-glass) !important;
    border: 2px solid var(--glass-border) !important;
    border-radius: 16px !important;
    color: var(--text-primary) !important;
    backdrop-filter: var(--glass-blur) !important;
    transition: all var(--transition) !important;
}

input:focus, select:focus, textarea:focus {
    border-color: #22D3EE !important;
    box-shadow: 
        0 0 0 4px rgba(34, 211, 238, 0.15),
        0 0 20px rgba(34, 211, 238, 0.2) !important;
    outline: none !important;
}

/* === ТАБЛИЦЫ === */
.analytics-table {
    border-collapse: separate;
    border-spacing: 0 8px;
}

.analytics-table tr {
    transition: all var(--transition) !important;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
}

.analytics-table tr:hover {
    transform: scale(1.01) !important;
    background: rgba(34, 211, 238, 0.08) !important;
    box-shadow: 0 4px 12px rgba(34, 211, 238, 0.15) !important;
}

/* === LOADING === */
.loading-screen {
    background: linear-gradient(135deg, #22D3EE, #67E8F9) !important;
}

.loading-spinner {
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: white;
}

/* === МОДАЛКИ === */
.modal-overlay {
    backdrop-filter: blur(8px) !important;
    background: rgba(15, 23, 42, 0.5) !important;
}

.modal-content {
    background: var(--bg-glass) !important;
    backdrop-filter: var(--glass-blur) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.15) !important;
    animation: modalSpring 0.4s var(--spring);
}

@keyframes modalSpring {
    0% {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* === МИКРО-АНИМАЦИИ === */
.fade-in {
    animation: fadeInSpring 0.4s var(--spring);
}

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

/* === GPU УСКОРЕНИЕ === */
.card,
.product-card,
.btn-primary,
.modal-content {
    will-change: transform;
    transform: translateZ(0);
}