/* ═══════════════════════════════════════════════════════════════ */
/* PREMIUM DEPTH & ATMOSPHERE                                     */
/* Adds visual richness without altering layout or color palette  */
/* ═══════════════════════════════════════════════════════════════ */

/* ── Animated Background Gradient ── */
@keyframes bgGradientDrift {
    0%   { background-position: 0% 0%; }
    50%  { background-position: 100% 100%; }
    100% { background-position: 0% 0%; }
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 15% 10%, rgba(59,130,246,0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 30%, rgba(139,92,246,0.035) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 90%, rgba(6,182,212,0.03) 0%, transparent 50%);
    background-size: 200% 200%;
    animation: bgGradientDrift 35s ease-in-out infinite;
    pointer-events: none;
    z-index: -2;
}

/* ── Noise Texture Overlay ── */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    opacity: 0.018;
    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)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
    pointer-events: none;
    z-index: -1;
}

/* ── Card Shimmer Line (top border gradient) ── */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 10%, rgba(59,130,246,0.2) 50%, transparent 90%);
    opacity: 0;
    transition: opacity 0.35s ease;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

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

/* Cards need relative positioning for ::before */
.card {
    position: relative;
    overflow: hidden;
}

/* ── Smooth Global Transitions ── */
a, button, .btn, .card, .nav-link, .dropdown-item {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Feature Card Icon Glow ── */
.home-features-grid .card:hover > div:first-child {
    filter: brightness(1.15) drop-shadow(0 0 10px rgba(59,130,246,0.15));
    transition: filter 0.35s ease;
}

/* ── Stat Block Glow Circle ── */
.stat-block .stat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
    margin-bottom: 8px;
    transition: background var(--transition-normal), transform var(--transition-normal);
}

.stat-block:hover .stat-icon {
    background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
    transform: scale(1.06);
}

/* ── Table Row Smooth Hover ── */
tbody tr {
    transition: background-color 0.2s cubic-bezier(0.4,0,0.2,1);
}

/* ── Dropdown Menu Depth ── */
.dropdown-menu {
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background-color: rgba(17, 18, 21, 0.95);
    border: 1px solid var(--color-border-strong);
}

/* ── Comparison Section ── */
.home-compare-grid > div:last-child {
    position: relative;
}

.home-compare-grid > div:last-child::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(59,130,246,0.15), transparent);
}

/* ── Dashboard Stat Value Gradient ── */
.stat-value {
    background: linear-gradient(135deg, #f0f0f3 0%, rgba(240,240,243,0.75) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-value.stat-text {
    -webkit-text-fill-color: currentColor;
    background: none;
}

/* ── GPU Acceleration Hints ── */
.card,
.btn,
.dash-card,
.authority-stat,
.stat-block,
.hero-accent-shape {
    will-change: transform;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Scroll-triggered Reveal Animation ── */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s cubic-bezier(0.4,0,0.2,1), transform 0.5s cubic-bezier(0.4,0,0.2,1);
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* After reveal, restore normal card transition speed */
.card.reveal-on-scroll.revealed {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal), opacity 0.25s ease;
}

.card.reveal-on-scroll.revealed:hover {
    transform: translateY(-4px);
}

/* Stagger child reveals */
.home-features-grid .card.reveal-on-scroll:nth-child(2) { transition-delay: 0.06s; }
.home-features-grid .card.reveal-on-scroll:nth-child(3) { transition-delay: 0.12s; }
.home-features-grid .card.reveal-on-scroll:nth-child(4) { transition-delay: 0.18s; }
.home-features-grid .card.reveal-on-scroll:nth-child(5) { transition-delay: 0.24s; }
.home-features-grid .card.reveal-on-scroll:nth-child(6) { transition-delay: 0.30s; }

/* ── Footer Depth ── */
footer {
    background-image: linear-gradient(180deg, rgba(17,18,21,0) 0%, rgba(17,18,21,1) 20%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* ── Shimmer Gradient Button Premium Glow ── */
.btn-shimmer-gradient:hover {
    box-shadow: var(--shadow-glow-sm);
}

/* ── Pricing Card Highlight ── */
.card[style*="border: 2px solid"] {
    box-shadow: var(--shadow-md), var(--shadow-glow-sm);
}

.card[style*="border: 2px solid"]:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* ── Premium Focus Ring ── */
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
button:focus-visible {
    outline: 2px solid rgba(59,130,246,0.4);
    outline-offset: 2px;
}

/* ── Subtle Text Selection ── */
::selection {
    background: rgba(59,130,246,0.25);
    color: #fff;
}