:root {
    --bg-color: #111827;
    --card-bg: rgba(31, 41, 55, 0.6);
    --primary: #8B5CF6;
    --secondary: #4C1D95;
    --text-main: #F9FAFB;
    --text-dim: #9CA3AF;
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-family: 'Outfit', sans-serif;
    --cursor-color: rgba(139, 92, 246, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(circle at 18% 14%, rgba(139, 92, 246, 0.22), transparent 34%),
        radial-gradient(circle at 82% 4%, rgba(56, 189, 248, 0.18), transparent 30%),
        linear-gradient(165deg, #060910 0%, #0d1424 52%, #100919 100%);
    color: var(--text-main);
    font-family: var(--font-family);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

body.modal-open {
    overflow: hidden;
}

/* Background Animation */
#tubes-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    touch-action: none;
    opacity: 0.95;
}

.mobile-aurora {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    display: none;
    opacity: 0;
    background:
        radial-gradient(circle at 10% 20%, rgba(244, 114, 182, 0.2), transparent 45%),
        radial-gradient(circle at 85% 12%, rgba(34, 211, 238, 0.24), transparent 48%),
        radial-gradient(circle at 60% 90%, rgba(59, 130, 246, 0.2), transparent 52%);
    filter: saturate(1.15);
    will-change: filter, transform;
}

.aurora-blob {
    position: absolute;
    width: 55vmax;
    aspect-ratio: 1;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.5;
    mix-blend-mode: screen;
}

.blob-one {
    top: -18%;
    left: -15%;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.72) 0%, rgba(109, 40, 217, 0.1) 72%);
    animation: driftBlobOne 14s ease-in-out infinite alternate;
}

.blob-two {
    top: 35%;
    right: -22%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.58) 0%, rgba(2, 132, 199, 0.12) 70%);
    animation: driftBlobTwo 18s ease-in-out infinite alternate;
}

.blob-three {
    bottom: -20%;
    left: 20%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.6) 0%, rgba(79, 70, 229, 0.1) 74%);
    animation: driftBlobThree 16s ease-in-out infinite alternate;
}

.aurora-grid {
    position: absolute;
    inset: -35%;
    background:
        repeating-linear-gradient(
            90deg,
            rgba(255, 255, 255, 0.05) 0,
            rgba(255, 255, 255, 0.05) 1px,
            transparent 1px,
            transparent 65px
        ),
        repeating-linear-gradient(
            0deg,
            rgba(167, 139, 250, 0.07) 0,
            rgba(167, 139, 250, 0.07) 1px,
            transparent 1px,
            transparent 65px
        );
    transform: perspective(1000px) rotateX(72deg) scale(1.45);
    transform-origin: center 75%;
    opacity: 0.2;
    animation: gridFloat 20s linear infinite;
}

@keyframes driftBlobOne {
    0% { transform: translate3d(0, 0, 0) scale(1); }
    100% { transform: translate3d(16%, 10%, 0) scale(1.22); }
}

@keyframes driftBlobTwo {
    0% { transform: translate3d(0, 0, 0) scale(0.96); }
    100% { transform: translate3d(-18%, 14%, 0) scale(1.18); }
}

@keyframes driftBlobThree {
    0% { transform: translate3d(0, 0, 0) scale(1); }
    100% { transform: translate3d(10%, -16%, 0) scale(1.2); }
}

@keyframes gridFloat {
    0% { transform: perspective(1000px) rotateX(72deg) scale(1.45) translateY(0); }
    100% { transform: perspective(1000px) rotateX(72deg) scale(1.45) translateY(-120px); }
}

@keyframes mobileHueShift {
    0% { filter: hue-rotate(0deg) saturate(1.1); }
    25% { filter: hue-rotate(35deg) saturate(1.3); }
    50% { filter: hue-rotate(70deg) saturate(1.2); }
    75% { filter: hue-rotate(25deg) saturate(1.35); }
    100% { filter: hue-rotate(0deg) saturate(1.1); }
}

@keyframes mobileAuroraBreath {
    0% { opacity: 0.72; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.05); }
}


.float-animation {
    animation: cardPulse 3.8s ease-in-out infinite;
}

@keyframes cardPulse {
    0% { box-shadow: 0 18px 32px rgba(0, 0, 0, 0.35); }
    50% { box-shadow: 0 30px 52px rgba(76, 29, 149, 0.34); }
    100% { box-shadow: 0 18px 32px rgba(0, 0, 0, 0.35); }
}

/* Typography & Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
}

main {
    position: relative;
    z-index: 1;
}

header .container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 80px;
}

.donate-top-btn,
#open-donate-modal {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    border: 1px solid rgba(167, 139, 250, 0.5);
    background: linear-gradient(135deg, rgba(76, 29, 149, 0.75), rgba(30, 64, 175, 0.68));
    color: #f9fafb;
    border-radius: 999px;
    padding: 10px 18px;
    min-height: 42px;
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    cursor: pointer;
    white-space: nowrap;
    appearance: none;
    -webkit-appearance: none;
    box-shadow: 0 10px 22px rgba(76, 29, 149, 0.28);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.donate-top-btn:hover,
#open-donate-modal:hover {
    transform: translateY(calc(-50% - 2px));
    box-shadow: 0 16px 26px rgba(76, 29, 149, 0.42);
    border-color: rgba(196, 181, 253, 0.9);
}

.donate-modal {
    position: fixed;
    inset: 0;
    z-index: 250;
    display: grid;
    place-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.donate-modal.is-open {
    opacity: 1;
    pointer-events: auto;
}

.donate-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.74);
    backdrop-filter: blur(10px);
}

.donate-modal-panel {
    width: min(92vw, 520px);
    background: linear-gradient(165deg, rgba(18, 25, 42, 0.9), rgba(29, 17, 48, 0.86));
    border: 1px solid rgba(167, 139, 250, 0.34);
    border-radius: 24px;
    padding: 34px 28px 30px;
    position: relative;
    z-index: 1;
    box-shadow: 0 28px 62px rgba(0, 0, 0, 0.52), 0 0 0 1px rgba(139, 92, 246, 0.22);
    transform: translateY(22px) scale(0.97);
    transition: transform 0.35s ease;
}

.donate-modal.is-open .donate-modal-panel {
    transform: translateY(0) scale(1);
}

.donate-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
}

.donate-modal-panel h2 {
    font-size: clamp(1.5rem, 5vw, 2rem);
    margin-bottom: 14px;
}

.donate-modal-panel p {
    color: var(--text-dim);
    line-height: 1.6;
    margin-bottom: 24px;
}

.upi-donate-block {
    margin-bottom: 18px;
    background: rgba(15, 23, 42, 0.45);
    border: 1px solid rgba(167, 139, 250, 0.22);
    border-radius: 16px;
    padding: 14px;
    text-align: center;
}

.donate-qr-image {
    width: min(100%, 260px);
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 14px;
    display: block;
    margin: 0 auto 12px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.07);
}

.upi-donate-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
}

.upi-meta-label {
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-dim);
}

.upi-donate-meta strong {
    font-size: 1.05rem;
    letter-spacing: 0.2px;
}

.upi-copy-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    border: 1px solid rgba(167, 139, 250, 0.45);
    background: rgba(30, 41, 59, 0.9);
    color: #f8fafc;
    border-radius: 10px;
    padding: 9px 12px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.upi-donate-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.upi-qr-download-btn {
    text-decoration: none;
}

.upi-copy-btn:hover {
    transform: translateY(-1px);
    background: rgba(51, 65, 85, 0.95);
    border-color: rgba(196, 181, 253, 0.9);
}

.upi-donate-help {
    margin: 10px 0 0;
    font-size: 0.8rem;
    color: #cbd5e1;
    line-height: 1.45;
}

.donate-modal-action {
    width: 100%;
    border: 1px solid rgba(192, 132, 252, 0.58);
    background: linear-gradient(120deg, rgba(139, 92, 246, 0.86), rgba(34, 211, 238, 0.72));
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.4px;
    font-size: 1rem;
    padding: 14px 18px;
    border-radius: 14px;
    cursor: pointer;
    box-shadow: 0 16px 28px rgba(79, 70, 229, 0.36);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.donate-modal-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 22px 34px rgba(79, 70, 229, 0.44);
}

.apk-guide-modal {
    position: fixed;
    inset: 0;
    z-index: 260;
    display: grid;
    place-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.apk-guide-modal.is-open {
    opacity: 1;
    pointer-events: auto;
}

.apk-guide-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.78);
    backdrop-filter: blur(10px);
}

.apk-guide-panel {
    width: min(94vw, 820px);
    max-height: min(90vh, 860px);
    overflow-y: auto;
    background: linear-gradient(165deg, rgba(8, 15, 29, 0.93), rgba(32, 20, 46, 0.9));
    border: 1px solid rgba(147, 197, 253, 0.28);
    border-radius: 24px;
    padding: 28px 22px 24px;
    position: relative;
    z-index: 1;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.58), 0 0 0 1px rgba(56, 189, 248, 0.16);
    transform: translateY(22px) scale(0.97);
    transition: transform 0.35s ease;
}

.apk-guide-modal.is-open .apk-guide-panel {
    transform: translateY(0) scale(1);
}

.apk-guide-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
}

.apk-guide-panel h2 {
    font-size: clamp(1.45rem, 4.6vw, 2rem);
    margin-bottom: 10px;
}

.apk-guide-panel p {
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 16px;
}

.apk-tutorial-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.apk-tutorial-card {
    background: rgba(15, 23, 42, 0.56);
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 14px;
    padding: 10px;
}

.apk-tutorial-card h3 {
    font-size: 0.86rem;
    letter-spacing: 0.4px;
    margin-bottom: 8px;
    color: #e2e8f0;
}

.apk-tutorial-card video {
    width: 100%;
    display: block;
    border-radius: 10px;
    background: #020617;
    aspect-ratio: 16 / 9;
}

.apk-download-btn {
    margin-top: 16px;
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: 1px solid rgba(34, 211, 238, 0.52);
    background: linear-gradient(120deg, rgba(6, 182, 212, 0.82), rgba(59, 130, 246, 0.74));
    color: #ecfeff;
    font-weight: 800;
    letter-spacing: 0.4px;
    font-size: 1rem;
    padding: 14px 18px;
    border-radius: 14px;
    box-shadow: 0 16px 30px rgba(14, 116, 144, 0.35);
    transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.apk-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 34px rgba(14, 116, 144, 0.45);
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 4px;
    background: linear-gradient(90deg, var(--primary), #fff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0 auto;
    transform: translateX(-10px);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 80px;
}

.hero h1 {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 600px;
    margin-bottom: 40px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s 0.2s forwards;
}

/* Cards Section */
.choice-section {
    display: flex;
    gap: 30px;
    width: 100%;
    max-width: 900px;
    margin-top: 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s 0.4s forwards;
    perspective: 1600px;
    transform-style: preserve-3d;
}

.choice-card {
    flex: 1;
    background: linear-gradient(155deg, rgba(31, 41, 55, 0.82), rgba(16, 22, 36, 0.8));
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
    padding: 40px;
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    will-change: transform, box-shadow;
    isolation: isolate;
    box-shadow: 0 18px 32px rgba(0, 0, 0, 0.35);
}

.choice-card::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--glare-x, 50%) var(--glare-y, 0%), rgba(255, 255, 255, 0.26), transparent 48%);
    pointer-events: none;
    opacity: 0.2;
    transition: opacity 0.35s ease;
}

.choice-card::after {
    content: '';
    position: absolute;
    inset: -55%;
    z-index: 0;
    background: conic-gradient(
        from 0deg,
        rgba(167, 139, 250, 0),
        rgba(167, 139, 250, 0.42),
        rgba(34, 211, 238, 0.22),
        rgba(167, 139, 250, 0)
    );
    opacity: 0;
    filter: blur(24px);
    transform: rotate(0deg);
    animation: cardAuraSpin 8s linear infinite;
    transition: opacity 0.35s ease;
}

.choice-card > * {
    position: relative;
    z-index: 2;
    transform: translateZ(26px);
}

.choice-card:hover {
    transform: perspective(1200px) translateY(-12px) rotateX(5deg) rotateY(-5deg) scale(1.03);
    border-color: var(--primary);
    box-shadow: 0 34px 68px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(139, 92, 246, 0.42);
}

.choice-card:hover::before {
    opacity: 0.5;
}

.choice-card:hover::after {
    opacity: 0.65;
}

.choice-card i {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--primary);
}

.choice-card.android i {
    color: var(--secondary);
}

.choice-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.choice-card span {
    font-size: 0.9rem;
    color: var(--text-dim);
}

@keyframes cardAuraSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Lite mode for low-end devices */
body.lite-mode {
    background: linear-gradient(165deg, #0b1020 0%, #111827 60%, #0a1020 100%);
}

body.lite-mode #tubes-canvas,
body.lite-mode .mobile-aurora,
body.lite-mode .custom-cursor {
    display: none !important;
}

body.lite-mode * {
    animation: none !important;
    transition: none !important;
    cursor: auto !important;
}

body.lite-mode header {
    backdrop-filter: none;
    background: rgba(9, 15, 28, 0.92);
}

body.lite-mode .choice-card,
body.lite-mode .feature-item,
body.lite-mode .monitor-frame,
body.lite-mode .phone-frame,
body.lite-mode .donate-modal-panel,
body.lite-mode .apk-guide-panel {
    backdrop-filter: none !important;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3) !important;
}

body.lite-mode .choice-card::before,
body.lite-mode .choice-card::after,
body.lite-mode .feature-item::before,
body.lite-mode .feature-item::after,
body.lite-mode .phone-frame::after {
    display: none !important;
}

body.lite-mode .choice-card:hover,
body.lite-mode .feature-item:hover {
    transform: none !important;
}

body.lite-mode .reveal {
    opacity: 1 !important;
    transform: none !important;
}

body.lite-mode .showcase {
    perspective: none;
    min-height: auto;
    padding: 90px 20px;
}

body.lite-mode .mockup-container {
    height: auto;
    display: grid;
    gap: 26px;
    justify-items: center;
}

body.lite-mode .monitor-wrapper,
body.lite-mode .phone-wrapper {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    width: min(100%, 760px);
    max-width: 760px;
    margin: 0 auto;
    transform: none !important;
}

body.lite-mode .phone-wrapper {
    width: min(320px, 75vw);
    max-width: 320px;
}

/* Responsive */
@media (max-width: 768px) {
    .choice-section {
        flex-direction: column;
    }

    .choice-card {
        transform: perspective(1200px) rotateX(2.5deg) rotateY(-2deg);
    }

    .choice-card.android {
        transform: perspective(1200px) rotateX(2deg) rotateY(2deg);
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .donate-top-btn,
    #open-donate-modal {
        padding: 8px 12px;
        font-size: 0.72rem;
        min-height: 36px;
        left: 12px;
    }

    .logo {
        font-size: 21px;
        margin: 0;
        transform: none;
    }

    .donate-qr-image {
        max-width: 230px;
    }

    .apk-guide-panel {
        width: min(95vw, 720px);
        padding: 22px 16px 18px;
    }

    .apk-tutorial-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mobile-aurora,
    .aurora-blob,
    .aurora-grid,
    .float-animation,
    .choice-card::after {
        animation: none !important;
    }

    .phone-frame::after {
        animation: none !important;
    }

    .donate-modal,
    .donate-modal-panel,
    .apk-guide-modal,
    .apk-guide-panel,
    .donate-top-btn,
    .donate-modal-action,
    .apk-download-btn {
        transition: none !important;
    }
}

@media (max-width: 900px) and (pointer: coarse) {
    #tubes-canvas {
        display: none;
    }

    .mobile-aurora {
        display: block;
        opacity: 1;
        animation: mobileHueShift 16s linear infinite, mobileAuroraBreath 8s ease-in-out infinite alternate;
    }

    * {
        cursor: auto !important;
    }

    .custom-cursor {
        display: none !important;
    }
}

/* Custom Cursor */
@media (pointer: fine) {
    * {
        cursor: none !important;
    }
}

.custom-cursor {
    width: 30px;
    height: 30px;
    border: 2px solid var(--primary);
    background: transparent;
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.15s ease-out, background 0.2s ease, border-color 0.2s ease;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
}

.custom-cursor::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px var(--primary);
    transition: opacity 0.2s ease;
}

.custom-cursor.hover {
    transform: translate(-50%, -50%) scale(1.8);
    background: rgba(139, 92, 246, 0.15);
    border-color: rgba(139, 92, 246, 0.5);
}

.custom-cursor.hover::after {
    opacity: 0;
}

.custom-cursor.leave {
    opacity: 0;
}

/* Feature Preview Section */
.preview {
    margin-top: 100px;
    padding-bottom: 100px;
    text-align: center;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
    perspective: 1400px;
    transform-style: preserve-3d;
}

.feature-item {
    background: linear-gradient(155deg, rgba(31, 41, 55, 0.76), rgba(17, 24, 39, 0.82));
    padding: 30px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    will-change: transform;
    box-shadow: 0 14px 26px rgba(0, 0, 0, 0.28);
}

.feature-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--glare-x, 50%) var(--glare-y, 50%), rgba(139, 92, 246, 0.34) 0%, transparent 58%);
    opacity: 0.2;
    transition: 0.4s ease;
    pointer-events: none;
    z-index: 0;
}

.feature-item::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(167, 139, 250, 0.26);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08);
    pointer-events: none;
    z-index: 0;
    transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

.feature-item > * {
    position: relative;
    z-index: 1;
    transform: translateZ(20px);
}

.feature-item:hover::before {
    opacity: 0.48;
}

.feature-item:hover::after {
    border-color: rgba(167, 139, 250, 0.52);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.22), 0 0 0 1px rgba(139, 92, 246, 0.24);
}

.feature-item:hover {
    border-color: var(--primary);
    background: linear-gradient(155deg, rgba(38, 48, 69, 0.9), rgba(20, 26, 44, 0.86));
    transform: perspective(1200px) translateY(-11px) rotateX(4deg) rotateY(-4deg) translateZ(8px);
    box-shadow: 0 26px 52px rgba(0, 0, 0, 0.45);
}

.brand-image-container {
    width: 100%;
    max-width: 800px;
    margin: 60px auto;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    border: 1px solid var(--glass-border);
}

.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.preview h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 10px;
}

.preview > p {
    color: var(--text-dim);
    margin-bottom: 40px;
}

.feature-item i {
    color: var(--primary);
    margin-bottom: 15px;
    width: 32px;
    height: 32px;
}

.brand-image-container img {
    width: 100%;
    display: block;
    transition: 1s ease;
}

.brand-image-container:hover img {
    transform: scale(1.05);
}

/* 3D Showcase Section */
.showcase {
    position: relative;
    padding: 150px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 2000px;
    min-height: 80vh;
    overflow: hidden;
    margin-top: 50px;
}

.mockup-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 700px;
    transform-style: preserve-3d;
}

/* Monitor Frame */
.monitor-wrapper {
    position: absolute;
    top: 40%;
    left: 40%;
    transform: translate(-50%, -50%) rotateY(15deg) rotateX(5deg);
    width: 70%;
    max-width: 800px;
    z-index: 1;
    transform-style: preserve-3d;
    transition: transform 0.1s linear;
}

.monitor-frame {
    background: #000;
    padding: 15px;
    padding-bottom: 25px;
    border-radius: 16px;
    border: 2px solid #333;
    box-shadow: 0 30px 60px rgba(0,0,0,0.6), 0 0 40px rgba(139, 92, 246, 0.2);
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.monitor-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

.monitor-stand {
    width: 60px;
    height: 60px;
    background: linear-gradient(to right, #111, #333, #111);
    margin: 0 auto;
    position: relative;
    z-index: -1;
    top: -10px;
}

.monitor-base {
    width: 250px;
    height: 12px;
    background: linear-gradient(to bottom, #444, #111);
    margin: 0 auto;
    border-radius: 10px 10px 0 0;
    box-shadow: 0 10px 20px rgba(0,0,0,0.8);
    position: relative;
    z-index: 1;
}

/* Phone Frame */
.phone-wrapper {
    position: absolute;
    top: 55%;
    right: 15%;
    transform: translate(0, -50%) rotateY(-20deg) rotateX(10deg) translateZ(100px);
    width: 25%;
    max-width: 300px;
    z-index: 2;
    transform-style: preserve-3d;
    transition: transform 0.1s linear;
}

.phone-frame {
    background: #050505;
    padding: 12px;
    border-radius: 40px;
    border: 4px solid #333;
    box-shadow: -20px 30px 60px rgba(0,0,0,0.8), 0 0 30px rgba(76, 29, 149, 0.4);
    position: relative;
    aspect-ratio: 9/19.5;
    overflow: hidden;
}

.phone-frame::after {
    content: '';
    position: absolute;
    inset: -45%;
    background: conic-gradient(
        from 0deg,
        rgba(139, 92, 246, 0.65),
        rgba(34, 211, 238, 0.35),
        rgba(99, 102, 241, 0.52),
        rgba(236, 72, 153, 0.3),
        rgba(139, 92, 246, 0.65)
    );
    filter: blur(22px);
    opacity: 0.36;
    animation: phoneAuraSpin 9s linear infinite;
    z-index: 0;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border: 2px solid #555;
    border-radius: 36px;
    pointer-events: none;
    z-index: 20;
}

.notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 45%;
    height: 25px;
    background: #050505;
    border-radius: 0 0 16px 16px;
    z-index: 10;
}

.phone-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 30px;
    position: relative;
    z-index: 1;
}

@keyframes phoneAuraSpin {
    0% { transform: rotate(0deg) scale(1); }
    100% { transform: rotate(360deg) scale(1.06); }
}

@media (max-width: 768px) {
    .monitor-wrapper {
        width: 90%;
        left: 50%;
        top: 30%;
    }
    .phone-wrapper {
        width: 45%;
        right: 10%;
        top: 70%;
    }
    .mockup-container {
        height: 600px;
    }
}