/* Rampart Tank Striker — tank.cn theme */
:root {
    --bg-dark: #1c1c1e;
    --bg-panel: #252528;
    --steel: #4a4a4a;
    --steel-light: #6a6a6e;
    --sand: #c9a96e;
    --sand-light: #e8d5b0;
    --tank-green: #4b7a47;
    --tank-green-light: #6a9e65;
    --action-orange: #ff8c00;
    --coin-gold: #ffd700;
    --text: #e8e8ea;
    --text-muted: #a0a0a8;
    --danger: #e04545;
    --success: #4caf50;
    --container: 1080px;
    --radius: 8px;
    --font-display: 'Rajdhani', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--action-orange); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--coin-gold); }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.site-shell { display: flex; flex-direction: column; min-height: 100vh; }
.site-main { flex: 1; }

/* ── Header ── */
.armor-header {
    background: linear-gradient(180deg, #2e2e32 0%, #222226 100%);
    border-bottom: 3px solid var(--steel);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    text-decoration: none;
    flex-shrink: 0;
}

.brand-logo { width: 48px; height: 48px; object-fit: contain; border-radius: 6px; }

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-text strong {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.brand-text small {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-toggle {
    display: none;
    background: var(--steel);
    border: none;
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1.1rem;
}

.armor-nav { flex: 1; }

.nav-list {
    display: flex;
    list-style: none;
    justify-content: flex-end;
    gap: 4px;
}

.nav-link {
    display: block;
    padding: 8px 16px;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    border-radius: var(--radius);
    border: 2px solid transparent;
    transition: all 0.2s;
}

.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-link.active {
    color: var(--coin-gold);
    border-color: var(--steel);
    background: rgba(255,215,0,0.08);
}

/* Page theme nav accents */
.page-theme-home .nav-link.active { color: var(--action-orange); border-color: var(--action-orange); background: rgba(255,140,0,0.1); }
.page-theme-company .nav-link.active { color: var(--sand); border-color: var(--sand); background: rgba(201,169,110,0.1); }
.page-theme-game .nav-link.active { color: var(--tank-green-light); border-color: var(--tank-green); background: rgba(75,122,71,0.15); }
.page-theme-contact .nav-link.active { color: #7eb8da; border-color: #5a9ec4; background: rgba(90,158,196,0.1); }
.page-theme-shop .nav-link.active { color: var(--coin-gold); border-color: var(--coin-gold); background: rgba(255,215,0,0.1); }

/* ── Footer ── */
.armor-footer {
    background: #18181a;
    border-top: 2px solid var(--steel);
    padding: 24px 0;
    margin-top: 48px;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-muted); font-size: 0.85rem; }
.footer-links a:hover { color: var(--text); }

/* ── Shared components ── */
.armor-panel {
    background: var(--bg-panel);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05), 0 4px 16px rgba(0,0,0,0.3);
}

.page-heading {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
    color: var(--text);
}

.section-heading {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--text);
}

.section-sub {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 1rem;
}

.content-wrap { padding: 40px 0 20px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-orange {
    background: var(--action-orange);
    color: #fff;
    border-color: #e07b00;
}
.btn-orange:hover { background: #e07b00; color: #fff; }

.btn-green {
    background: var(--tank-green);
    color: #fff;
    border-color: #3d6339;
}
.btn-green:hover { background: #3d6339; color: #fff; }

.btn-gold {
    background: linear-gradient(180deg, #ffe066 0%, #ffd700 50%, #e6c200 100%);
    color: #1a1a1a;
    border-color: #c9a800;
}
.btn-gold:hover { color: #1a1a1a; filter: brightness(1.05); }

.btn-outline {
    background: transparent;
    color: var(--text);
    border-color: var(--steel-light);
}
.btn-outline:hover { border-color: var(--text); color: var(--text); }

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 24px;
}

.cta-row a img {
    height: 48px;
    width: auto;
    display: block;
    border-radius: 6px;
    transition: transform 0.2s;
}
.cta-row a:hover img { transform: scale(1.04); }

.value-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.value-tag {
    padding: 6px 14px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--steel);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

/* ── Home Hero ── */
.home-hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #111;
}

.home-hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.45;
}

.home-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(28,28,30,0.85) 0%, rgba(75,122,71,0.25) 50%, rgba(28,28,30,0.9) 100%);
}

.home-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: center;
    padding: 60px 20px;
    max-width: var(--container);
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255,140,0,0.2);
    border: 1px solid var(--action-orange);
    border-radius: 4px;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--action-orange);
    margin-bottom: 12px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.hero-tagline {
    font-size: 1.05rem;
    color: var(--sand-light);
    max-width: 520px;
    line-height: 1.7;
}

.hero-visual img {
    width: 100%;
    max-width: 280px;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 8px 24px rgba(0,0,0,0.5));
    border-radius: 12px;
}

/* Home sections */
.home-section { padding: 48px 0; }
.home-section:nth-child(even) { background: rgba(255,255,255,0.02); }

.home-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
}

.home-split-media img {
    width: 100%;
    border-radius: var(--radius);
    border: 2px solid var(--steel);
}

.feature-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 24px 0;
}

.feature-chip {
    background: var(--bg-panel);
    border: 1px solid var(--steel);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
}

.feature-chip i {
    font-size: 1.4rem;
    color: var(--tank-green-light);
    margin-bottom: 8px;
    display: block;
}

.feature-chip h4 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-chip p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.screenshot-preview {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.screenshot-preview img {
    flex: 1;
    width: 0;
    border-radius: 6px;
    border: 2px solid var(--steel);
    aspect-ratio: 16/10;
    object-fit: cover;
}

.home-duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.home-duo-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--coin-gold);
}

.home-duo-card.contact-card h3 { color: #7eb8da; }

.contact-line {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.contact-line i { color: var(--steel-light); width: 18px; }

/* ── Company page ── */
.pillar-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.pillar-card {
    background: var(--bg-panel);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    border-top: 3px solid var(--sand);
}

.pillar-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--sand);
}

.pillar-card p { font-size: 0.9rem; color: var(--text-muted); }

.company-body {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
    align-items: start;
}

.company-body p { margin-bottom: 16px; color: var(--text-muted); }
.company-body p strong { color: var(--text); }

.company-visual img {
    width: 100%;
    border-radius: var(--radius);
    border: 2px solid var(--steel);
}

/* ── Game page ── */
.game-hero-block {
    text-align: center;
    padding: 40px 0 32px;
}

.game-hero-block img {
    width: 120px;
    margin-bottom: 16px;
    border-radius: 12px;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
}

.game-intro { margin-bottom: 32px; }
.game-intro p { margin-bottom: 14px; color: var(--text-muted); }

.screenshot-scroll {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding: 8px 0 16px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.screenshot-scroll img {
    flex: 0 0 280px;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 2px solid var(--steel);
    scroll-snap-align: start;
}

.feature-grid-2x2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.feature-box {
    background: var(--bg-panel);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    padding: 24px;
    border-left: 4px solid var(--tank-green);
}

.feature-box h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--tank-green-light);
}

.feature-box p { font-size: 0.9rem; color: var(--text-muted); }

/* ── Contact page ── */
.command-center {
    max-width: 640px;
    margin: 0 auto;
}

.command-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--steel);
}

.command-row:last-child { border-bottom: none; }

.command-icon {
    width: 44px;
    height: 44px;
    background: rgba(90,158,196,0.15);
    border: 2px solid #5a9ec4;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #7eb8da;
    font-size: 1.1rem;
}

.command-info h3 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.command-info p { font-size: 1rem; }
.command-info a { color: var(--text); }
.command-info a:hover { color: #7eb8da; }

/* ── Shop page ── */
.shop-layout {
    display: grid;
    grid-template-columns: 240px 1fr 320px;
    gap: 20px;
    align-items: start;
}

.shop-intro-panel,
.shop-grid-panel {
    display: flex;
    flex-direction: column;
}

.shop-intro-body {
    flex: 1;
}

.shop-intro-panel h2,
.shop-grid-panel h2,
.shop-order-panel h2 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--coin-gold);
}

.shop-intro-panel ul {
    list-style: none;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.shop-intro-panel li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    line-height: 1.5;
}

.shop-intro-panel li:last-child { border-bottom: none; }
.shop-intro-panel strong { color: var(--text); }

.coins-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
    padding-right: 6px;
    scrollbar-width: thin;
    scrollbar-color: var(--steel-light) rgba(0, 0, 0, 0.25);
}

.coins-list::-webkit-scrollbar {
    width: 8px;
}

.coins-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.25);
    border-radius: 4px;
}

.coins-list::-webkit-scrollbar-thumb {
    background: var(--steel-light);
    border-radius: 4px;
}

.coins-list::-webkit-scrollbar-thumb:hover {
    background: var(--coin-gold);
}

.coin-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(255,255,255,0.03);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
}

.coin-row:hover { border-color: var(--coin-gold); background: rgba(255,215,0,0.05); }
.coin-row.selected { border-color: var(--coin-gold); background: rgba(255,215,0,0.1); }

.coin-row img { width: 40px; height: 40px; object-fit: contain; flex-shrink: 0; }

.coin-info { flex: 1; min-width: 0; }
.coin-title { font-weight: 600; font-size: 0.95rem; }
.coin-price { color: var(--coin-gold); font-family: var(--font-display); font-weight: 700; }

.select-btn {
    padding: 6px 14px;
    background: var(--steel);
    border: none;
    border-radius: 4px;
    color: var(--text);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}
.select-btn:hover { background: var(--coin-gold); color: #1a1a1a; }

.selected-coin {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(255,215,0,0.08);
    border: 1px dashed var(--coin-gold);
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.selected-coin img { height: 32px; }

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-muted);
}

.form-group label .required { color: var(--danger); }

.form-group input[type="text"],
.form-group input[type="email"] {
    width: 100%;
    padding: 10px 12px;
    background: rgba(0,0,0,0.3);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.95rem;
}

.form-group input:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-group input:focus {
    outline: none;
    border-color: var(--coin-gold);
}

.form-select {
    width: 100%;
    padding: 10px 12px;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.95rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23a0a0a8' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-select:focus {
    outline: none;
    border-color: var(--coin-gold);
}

.form-select option {
    background: var(--bg-panel);
    color: var(--text);
}

.payment-radios { display: flex; flex-direction: column; gap: 8px; }

.payment-radio {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(0,0,0,0.2);
    border: 2px solid var(--steel);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.payment-radio:has(input:checked) { border-color: var(--coin-gold); background: rgba(255,215,0,0.06); }
.payment-radio input { accent-color: var(--coin-gold); }

.agree-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1.5;
}

.agree-label input { margin-top: 3px; accent-color: var(--coin-gold); flex-shrink: 0; }

.error-message {
    display: block;
    color: var(--danger);
    font-size: 0.8rem;
    margin-top: 4px;
    min-height: 1em;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(180deg, #ffe066 0%, #ffd700 50%, #e6c200 100%);
    border: 2px solid #c9a800;
    border-radius: var(--radius);
    color: #1a1a1a;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: filter 0.2s;
}

.submit-btn:hover { filter: brightness(1.05); }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.order-message {
    margin-top: 12px;
    padding: 12px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    display: none;
}

.order-message.error {
    display: block;
    background: rgba(224,69,69,0.15);
    border: 1px solid var(--danger);
    color: #ff8080;
}

.loading {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
}

/* ── Modal ── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.open { display: flex; }

.modal-panel {
    background: var(--bg-panel);
    border: 3px solid var(--steel);
    border-radius: var(--radius);
    max-width: 480px;
    width: 100%;
    padding: 32px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.5);
    position: relative;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
}

.modal-close:hover { color: var(--text); }

.modal-panel h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: var(--coin-gold);
}

.modal-detail {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--steel);
    font-size: 0.95rem;
}

.modal-detail .label { color: var(--text-muted); }
.modal-detail .value { font-weight: 600; text-align: right; max-width: 60%; word-break: break-all; }
.modal-detail.total .value { color: var(--coin-gold); font-size: 1.1rem; }

.modal-actions {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 8px;
}

/* ── Result pages ── */
.result-panel {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
    padding: 48px 32px;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.result-icon.success { color: var(--success); }
.result-icon.fail { color: var(--danger); }
.result-icon.warn { color: var(--action-orange); }

.result-panel h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.result-panel p {
    color: var(--text-muted);
    margin-bottom: 28px;
    line-height: 1.7;
}

.action-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.error-code {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255,140,0,0.15);
    border: 1px solid var(--action-orange);
    border-radius: 4px;
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--action-orange);
    margin-bottom: 12px;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .home-hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-tagline { margin: 0 auto; }
    .hero-visual { order: -1; }
    .hero-title { font-size: 2.2rem; }
    .cta-row { justify-content: center; }
    .home-split, .home-duo, .company-body, .pillar-grid, .feature-grid-2x2, .feature-strip { grid-template-columns: 1fr; }
    .shop-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; align-items: center; justify-content: center; }

    .armor-nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #222226;
        border-bottom: 2px solid var(--steel);
        display: none;
        padding: 12px 20px;
    }

    .armor-nav.open { display: block; }

    .nav-list { flex-direction: column; gap: 4px; }
    .nav-link { padding: 12px 16px; }

    .header-inner { position: relative; }
    .footer-inner { flex-direction: column; text-align: center; }
    .screenshot-preview { flex-direction: column; }
    .screenshot-preview img { width: 100%; }
}