/* ============================================================
   MaxVin Landing — style.css
   Mobile-first, responsive breakpoint at 768px
   ============================================================ */

/* ---- CSS Variables ---- */

:root {
    --gold: #c9a227;
    --gold-light: #f5d87a;
    --gold-dark: #7a4a00;
    --gold-glow: rgba(200, 162, 39, 0.65);
    --purple: #7c22c7;
    --red-btn: #c0392b;
    --dark-bg: #1a0800;
    --panel-bg: rgba(16, 8, 0, 0.78);
    --radius-btn: 50px;
    --shadow-img: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.65));
}

/* SEO: ẩn h1 cho screen reader, vẫn đọc được */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

/* ---- Reset ---- */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    overflow-x: hidden;
    background: var(--dark-bg);
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
}

/* ============================================================
   PAGE WRAPPER
   ============================================================ */

.page {
    min-height: 100vh;
    background-color: var(--dark-bg);
    background-size: cover;
    background-position: center top;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    /* anchor for absolute light */
    animation: pageIn 0.6s ease both;
}

@keyframes pageIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Mobile: chỉ load Mobile/bg.jpg */

@media (max-width: 767px) {
    .page {
        background-image: url('Mobile/bg.jpg');
    }
}

/* ============================================================
   TOP BAR
   ============================================================ */

.top-bar {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 10px 6px;
    position: relative;
    z-index: 20;
    animation: slideDown 0.6s ease both;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-wrap {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 11;
}

.logo-img {
    width: clamp(130px, 50vw, 190px);
    filter: var(--shadow-img);
    animation: logoPulse 3.5s ease-in-out infinite;
}

@keyframes logoPulse {
    0%,
    100% {
        filter: drop-shadow(0 0 12px var(--gold-glow)) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
    }
    50% {
        filter: drop-shadow(0 0 28px rgba(255, 220, 40, 0.95)) drop-shadow(0 0 40px rgba(255, 200, 0, 0.4)) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
    }
}

.social-link {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.social-link:hover {
    transform: scale(1.12);
}

.social-icon {
    width: 46px;
    height: 46px;
    object-fit: contain;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.55));
}

/* ============================================================
   DECORATIVE LIGHT + LINE
   ============================================================ */

/* Light: phía sau, logo đè lên tạo hiệu ứng phát sáng */

.deco-light {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
    width: clamp(90px, 32vw, 140px);
    text-align: center;
}

.logo-wrap .logo-img {
    position: relative;
    z-index: 1;
}

.light-img {
    width: 100%;
    max-width: none;
    margin: 0 auto;
    opacity: 0.92;
}

/* Line: PC dưới header (absolute), Mobile trong col-center */

.deco-line--header {
    display: none;
}

/* Mobile: line trong cụm CTA, sát mép dưới banner */

.deco-line--cta {
    width: 72%;
    max-width: 340px;
    margin: -8px auto 2px;
    text-align: center;
}

.line-img {
    width: 100%;
}

/* ============================================================
   CONTENT GRID  (mobile = single column)
   ============================================================ */

.content-grid {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 8px 24px;
    gap: 10px;
    animation: fadeUp 0.7s ease both 0.15s;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(22px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hide PC-only columns on mobile */

.col-left,
.col-right,
.btn-caidat {
    display: none;
}

/* ============================================================
   CENTER COLUMN
   ============================================================ */

.col-center {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

/* ---- Banner Main ---- */

.banner-wrap {
    width: 100%;
    text-align: center;
}

.banner-img {
    width: 100%;
    max-width: min(540px, 95vw);
    margin: 0 auto;
    filter: var(--shadow-img);
    animation: fadeUp 0.8s ease both 0.2s;
}

/* ---- ĐẲNG CẤP THỜI THƯỢNG ---- */

.cta-dangcap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 92%;
    max-width: 400px;
    padding: 15px 24px;
    border-radius: var(--radius-btn);
    border: none;
    cursor: default;
    font-size: clamp(13px, 4.2vw, 19px);
    font-weight: 900;
    letter-spacing: 1.6px;
    color: #2d1200;
    background: linear-gradient(180deg, #ffe566 0%, #d49010 38%, #f6cb1e 66%, #9b6200 100%);
    box-shadow: 0 0 0 3px #7a4a00, 0 0 0 5px #e8be3a, 0 6px 22px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 200, 0.45);
    text-shadow: 0 1px 2px rgba(255, 240, 180, 0.4);
    animation: goldGlow 2.5s ease-in-out infinite;
    user-select: none;
}

@keyframes goldGlow {
    0%,
    100% {
        box-shadow: 0 0 0 3px #7a4a00, 0 0 0 5px #e8be3a, 0 6px 22px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 200, 0.45);
    }
    50% {
        box-shadow: 0 0 0 3px #7a4a00, 0 0 0 5px #e8be3a, 0 6px 32px rgba(200, 155, 0, 0.7), 0 0 48px rgba(255, 200, 0, 0.25), inset 0 1px 0 rgba(255, 255, 200, 0.45);
    }
}

.cta-orn {
    font-size: 1.1em;
    opacity: 0.8;
}

/* ---- Download buttons (mobile only) ---- */

.dl-wrap {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: -6px;
}

.dl-link {
    display: block;
    width: 92%;
    max-width: 360px;
    transition: transform 0.2s, filter 0.2s;
}

.dl-link:hover {
    transform: translateY(-2px) scale(1.02);
    filter: brightness(1.08);
}

.dl-img {
    width: 100%;
    filter: drop-shadow(0 4px 14px rgba(100, 0, 200, 0.45));
}

/* ---- iOS download choice popup ---- */

.ios-dl-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.ios-dl-modal[hidden] {
    display: none !important;
}

.ios-dl-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(2px);
}

.ios-dl-panel {
    position: relative;
    z-index: 1;
    width: min(92vw, 420px);
    animation: iosDlIn 0.28s ease both;
}

@keyframes iosDlIn {
    from {
        opacity: 0;
        transform: scale(0.92) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.ios-dl-frame {
    position: relative;
    width: 100%;
}

.ios-dl-frame-bg {
    width: 100%;
    height: auto;
    pointer-events: none;
    filter: drop-shadow(0 10px 28px rgba(0, 0, 0, 0.55));
}

.ios-dl-actions {
    position: absolute;
    left: 9%;
    right: 9%;
    top: 26%;
    bottom: 14%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 16px;
    padding-top: 2%;
}

.ios-dl-opt {
    display: block;
    width: 100%;
    transition: transform 0.18s ease, filter 0.18s ease;
}

.ios-dl-opt:last-child {
    margin-top: 10px;
}

.ios-dl-opt:active {
    transform: scale(0.97);
    filter: brightness(1.08);
}

.ios-dl-opt-img {
    width: 100%;
    height: auto;
}

body.ios-dl-open {
    overflow: hidden;
}

/* ---- Suits separator ---- */

.suits-bar {
    display: flex;
    gap: 14px;
    justify-content: center;
    align-items: center;
    margin: 2px 0;
}

.suit {
    font-size: 18px;
    opacity: 0.9;
}

.suit-heart {
    color: #e53e3e;
}

.suit-club {
    color: var(--gold);
}

.suit-dia {
    color: var(--gold);
}

.suit-spade {
    color: var(--gold);
}

/* ---- Chơi nhanh bản Web ---- */

.btn-web {
    display: block;
    width: 92%;
    max-width: 360px;
    transition: transform 0.2s, filter 0.2s;
}

.btn-web:hover {
    transform: translateY(-2px) scale(1.02);
    filter: brightness(1.08);
}

.btn-web-img {
    width: 100%;
    filter: drop-shadow(0 4px 14px rgba(180, 140, 0, 0.5));
}

/* ---- Hàng nút phụ (Tải app + Cài đặt 1.1.1.1) ---- */

.hang-nut {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ---- Tải app (iOS + Android) ---- */

.btn-taiapp {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 92%;
    max-width: 360px;
    margin: 12px auto 0;
    padding: 11px 16px;
    border-radius: 999px;
    text-decoration: none;
    color: #2a1600;
    background: linear-gradient(135deg, #ffe9a8 0%, #f5c451 45%, #d79a24 100%);
    border: 2px solid rgba(255, 245, 205, 0.75);
    box-shadow: 0 4px 16px rgba(180, 140, 0, 0.45);
    transition: transform 0.2s, filter 0.2s;
}

.btn-taiapp:hover {
    transform: translateY(-2px) scale(1.02);
    filter: brightness(1.06);
}

.btn-taiapp-ico {
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #2a1600;
    color: #f5c451;
}

.btn-taiapp-ico svg {
    width: 19px;
    height: 19px;
}

.btn-taiapp-chu {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.25;
}

.btn-taiapp-chu b {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 0.6px;
}

.btn-taiapp-chu i {
    font-style: normal;
    font-size: 11px;
    font-weight: 600;
    opacity: 0.78;
}

/* ---- Cài đặt 1.1.1.1 (PC-only, hidden mobile) ---- */

.btn-caidat {
    display: none;
}

.btn-caidat-img {
    width: 100%;
    filter: drop-shadow(0 4px 16px rgba(200, 0, 0, 0.45));
}

/* ============================================================
   CAROUSEL  (inside col-left, hidden mobile)
   ============================================================ */

.carousel {
    width: 100%;
    overflow: hidden;
    border-radius: 14px;
    position: relative;
}

.carousel-track {
    display: flex;
    transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

.carousel-slide {
    min-width: 100%;
    width: 100%;
    object-fit: cover;
    border-radius: 14px;
    user-select: none;
    pointer-events: none;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 7px;
    margin-top: 10px;
}

.dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    border: none;
    background: rgba(200, 162, 39, 0.35);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    padding: 0;
}

.dot:hover {
    background: rgba(200, 162, 39, 0.65);
}

.dot.active {
    background: var(--gold);
    transform: scale(1.3);
    box-shadow: 0 0 7px var(--gold-glow);
}

/* ============================================================
   LINK PANEL  (col-right, hidden mobile)
   ============================================================ */

.link-panel {
    border: 2px solid var(--gold-dark);
    border-radius: 14px;
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 16px 14px 14px;
    color: #fff;
    box-shadow: 0 0 0 1px rgba(200, 162, 39, 0.2), 0 8px 32px rgba(0, 0, 0, 0.6);
}

.lp-header {
    text-align: center;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.2px;
    color: var(--gold);
    text-transform: uppercase;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(200, 162, 39, 0.3);
    margin-bottom: 10px;
}

.lp-brand {
    text-align: center;
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 3px;
    color: var(--gold-light);
    text-shadow: 0 0 14px rgba(245, 216, 122, 0.8);
    margin-bottom: 16px;
}

.lp-steps {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 13px;
    margin-bottom: 14px;
}

.lp-step {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.step-num {
    flex-shrink: 0;
    width: 23px;
    height: 23px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 900;
    color: #fff;
    box-shadow: 0 0 8px var(--gold-glow);
}

.step-body {
    flex: 1;
}

.step-lbl {
    display: block;
    font-size: 11px;
    color: #bbb;
    margin-bottom: 3px;
}

.step-row {
    display: flex;
    align-items: center;
    gap: 7px;
}

.step-appicon {
    width: 30px;
    height: 30px;
    object-fit: contain;
    border-radius: 7px;
}

.step-val {
    font-size: 15px;
    font-weight: 900;
    color: #fff;
}

.step-accent {
    color: #7dd3fc;
    text-shadow: 0 0 8px rgba(125, 211, 252, 0.5);
}

.step-gold {
    color: var(--gold-light);
    text-shadow: 0 0 8px rgba(245, 216, 122, 0.6);
}

.lp-note {
    font-size: 10px;
    color: #999;
    line-height: 1.5;
    text-align: center;
    border-top: 1px solid rgba(200, 162, 39, 0.25);
    padding-top: 10px;
}

/* ============================================================
   PC BREAKPOINT  ≥ 768px  —  zero-scroll, fits exactly 100vh
   ============================================================ */

@media (min-width: 768px) {
    /* Lock viewport — no scroll on desktop */
    html,
    body {
        height: 100%;
        overflow: hidden;
    }
    /* PC: chỉ load PC/bg.jpg */
    .page {
        height: 100vh;
        overflow: hidden;
        background-image: url('PC/bg.jpg');
        background-position: center center;
        position: relative;
    }
    /* ---- Top bar — icons sát mép ---- */
    .top-bar {
        flex-shrink: 0;
        padding: 14px 12px 6px;
        position: relative;
        z-index: 10;
    }
    .logo-img {
        width: clamp(150px, 14vw, 210px);
    }
    .social-icon {
        width: 50px;
        height: 50px;
    }
    /* ---- Light: nhỏ (PC) — logo đè lên phát sáng ---- */
    .deco-light {
        width: clamp(110px, 12vw, 170px);
    }
    /* ---- Line: PC dưới header (absolute) ---- */
    .deco-line--header {
        display: block;
        position: absolute;
        top: 82px;
        left: 50%;
        transform: translateX(-50%);
        width: 40%;
        max-width: 440px;
        margin: 0;
        z-index: 3;
    }
    .deco-line--cta {
        display: none;
    }
    /* ---- 3-column grid — banners sát mép trái/phải (như social icons) ---- */
    .content-grid {
        flex: 1;
        min-height: 0;
        position: relative;
        z-index: 5;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0 32px 32px;
        gap: 12px;
        max-width: 100%;
        width: 100%;
    }
    /* ---- Left col — banner sát mép trái ---- */
    .col-left {
        display: flex;
        flex-direction: column;
        align-self: center;
        flex: 0 0 clamp(140px, 16vw, 220px);
        animation: slideInLeft 0.7s ease both 0.2s;
    }
    @keyframes slideInLeft {
        from {
            opacity: 0;
            transform: translateX(-28px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    /* Carousel image height-constrained */
    .carousel-slide {
        max-height: 55vh;
        object-fit: cover;
    }
    /* ---- Center col ---- */
    .col-center {
        flex: 1 1 auto;
        max-width: 560px;
        align-self: center;
        gap: 8px;
    }
    /* Banner scales by height, not width */
    .banner-img {
        max-height: 48vh;
        width: auto;
        max-width: 100%;
        margin: 0 auto;
    }
    .cta-dangcap {
        font-size: clamp(13px, 1.5vw, 18px);
        padding: 11px 28px;
        max-width: 430px;
    }
    /* Hide mobile download buttons */
    .dl-wrap {
        display: none;
    }
    .suits-bar {
        margin: 0;
    }
    .btn-web {
        max-width: 300px;
    }
    .hang-nut {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: 12px;
    }
    .btn-taiapp {
        max-width: 270px;
        margin: 0;
        padding: 9px 14px;
    }
    .btn-taiapp-chu b {
        font-size: 16px;
    }
    .btn-taiapp-chu i {
        font-size: 10px;
    }
    /* Show btn-caidat */
    .btn-caidat {
        display: block;
        width: auto;
        flex: 0 1 210px;
        transition: transform 0.2s, filter 0.2s;
    }
    .btn-caidat:hover {
        transform: translateY(-2px) scale(1.03);
        filter: brightness(1.08);
    }
    /* ---- Right col — banner sát mép phải ---- */
    .col-right {
        display: flex;
        flex-direction: column;
        align-self: center;
        flex: 0 0 clamp(140px, 16vw, 220px);
        animation: slideInRight 0.7s ease both 0.2s;
    }
    @keyframes slideInRight {
        from {
            opacity: 0;
            transform: translateX(28px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    /* Right panel: scale font down so it fits */
    .lp-brand {
        font-size: 18px;
        margin-bottom: 10px;
    }
    .lp-steps {
        gap: 10px;
        margin-bottom: 10px;
    }
    .step-val {
        font-size: 13px;
    }
    .step-appicon {
        width: 26px;
        height: 26px;
    }
    .link-panel {
        padding: 12px 12px 10px;
    }
}

/* ============================================================
   LARGE DESKTOP  ≥ 1200px  —  give more breathing room
   ============================================================ */

@media (min-width: 1200px) {
    .col-left,
    .col-right {
        flex: 0 0 240px;
    }
    .content-grid {
        gap: 26px;
    }
    .banner-img {
        max-height: 50vh;
    }
    .cta-dangcap {
        font-size: 18px;
        padding: 13px 34px;
    }
    .btn-web {
        max-width: 330px;
    }
    .btn-taiapp {
        max-width: 300px;
    }
    .btn-caidat {
        flex: 0 1 230px;
        max-width: 230px;
    }
}

/* ============================================================
   MOBILE  < 768px  — cụm CTA sát banner, tránh scroll mới thấy nút
   ============================================================ */

@media (max-width: 767px) {
    .col-center {
        gap: 6px;
    }
    .banner-wrap {
        margin-bottom: -4px;
    }
    .banner-img {
        max-height: 46vh;
        object-fit: contain;
    }
    .deco-line--cta {
        margin: -12px auto 0;
    }
    .dl-wrap {
        margin-top: -14px;
        gap: 12px;
    }
    .suits-bar {
        margin: 0;
    }
    .btn-web {
        margin-top: -2px;
    }
    .content-grid {
        padding: 0 8px 16px;
    }
}

/* ============================================================
   SMALL MOBILE  ≤ 380px  — tighten spacing, icons sát mép
   ============================================================ */

@media (max-width: 380px) {
    .top-bar {
        padding: 10px 8px 4px;
    }
    .social-icon {
        width: 38px;
        height: 38px;
    }
    .logo-img {
        width: 44vw;
    }
    .cta-dangcap {
        font-size: 12px;
        padding: 12px 18px;
    }
    .content-grid {
        gap: 8px;
        padding: 0 6px 20px;
    }
}