:root {
    --primary: #1554cc;
    --primary-dark: #0b317b;
    --secondary: #f6b51e;
    --bg: #f4f7fb;
    --surface: #ffffff;
    --text: #1f2937;
    --muted: #64748b;
    --border: #dbe4ef;
    --success: #16834a;
    --warning: #b7791f;
    --danger: #c53030;
    --shadow: 0 20px 45px rgba(15, 23, 42, .11);
    --shadow-soft: 0 12px 30px rgba(15, 23, 42, .08);
    --radius: 24px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.public-buy-page {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, Arial, Helvetica, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(21, 84, 204, .16), transparent 34%),
        radial-gradient(circle at bottom right, rgba(246, 181, 30, .18), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

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

button,
input,
select {
    font: inherit;
}

.buy-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px clamp(18px, 4vw, 54px);
    background: rgba(255, 255, 255, .88);
    border-bottom: 1px solid rgba(219, 228, 239, .9);
    box-shadow: 0 10px 30px rgba(15, 23, 42, .06);
    backdrop-filter: blur(14px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    color: var(--primary-dark);
    font-weight: 900;
    letter-spacing: -.02em;
}

.brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid var(--border);
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-weight: 900;
}

.buy-topbar-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 12px 18px;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 800;
    line-height: 1;
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 14px 28px rgba(21, 84, 204, .25);
}

.btn-primary:hover {
    box-shadow: 0 18px 36px rgba(21, 84, 204, .33);
}

.btn-secondary {
    color: var(--primary-dark);
    background: rgba(21, 84, 204, .09);
}

.btn-ghost {
    color: var(--primary-dark);
    background: #ffffff;
    border: 1px solid var(--border);
}

.btn-full {
    width: 100%;
}

.buy-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 34px 0 58px;
}

.empty-state,
.notice,
.buy-hero-card,
.buy-side-card,
.buy-form-card {
    border: 1px solid rgba(219, 228, 239, .95);
    background: rgba(255, 255, 255, .92);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.empty-state {
    padding: clamp(30px, 5vw, 58px);
    text-align: center;
}

.empty-state h1 {
    margin: 0 0 12px;
    color: var(--primary-dark);
    font-size: clamp(30px, 5vw, 48px);
}

.empty-state p {
    margin: 0 auto 22px;
    max-width: 560px;
    color: var(--muted);
}

.buy-hero-card {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
    gap: 22px;
    overflow: hidden;
    padding: clamp(22px, 4vw, 34px);
    background:
        radial-gradient(circle at top right, rgba(246, 181, 30, .19), transparent 28%),
        linear-gradient(135deg, rgba(255,255,255,.96), rgba(238,244,255,.94));
}

.buy-hero-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.eyebrow {
    display: inline-flex;
    width: fit-content;
    margin-bottom: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(21, 84, 204, .09);
    color: var(--primary);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.buy-hero-copy h1 {
    margin: 0 0 10px;
    color: var(--primary-dark);
    font-size: clamp(34px, 5vw, 60px);
    line-height: .98;
    letter-spacing: -.05em;
}

.buy-hero-copy p {
    max-width: 660px;
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
}

.buy-hero-copy .lead {
    color: var(--text);
    font-size: clamp(20px, 3vw, 30px);
    font-weight: 900;
    line-height: 1.15;
}

.hero-stats,
.mini-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.hero-stats div,
.mini-stats div {
    padding: 16px;
    border: 1px solid rgba(219, 228, 239, .95);
    border-radius: 18px;
    background: rgba(255,255,255,.82);
    box-shadow: 0 10px 22px rgba(15,23,42,.05);
}

.hero-stats strong,
.mini-stats strong {
    display: block;
    color: var(--primary-dark);
    font-size: 18px;
    font-weight: 900;
}

.hero-stats span,
.mini-stats span {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.buy-hero-media {
    min-height: 310px;
    overflow: hidden;
    border-radius: 24px;
    background: linear-gradient(145deg, #eaf1ff, #ffffff);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
}

.buy-hero-media img,
.buy-hero-media .image-placeholder {
    width: 100%;
    height: 100%;
    min-height: 310px;
    object-fit: cover;
}

.image-placeholder {
    display: grid;
    place-items: center;
    color: var(--muted);
    font-weight: 900;
    background:
        linear-gradient(135deg, rgba(21,84,204,.09), rgba(246,181,30,.14)),
        #f8fafc;
}

.notice {
    margin-top: 20px;
    padding: 18px 20px;
}

.notice strong {
    display: block;
    margin-bottom: 8px;
    color: var(--primary-dark);
}

.notice p {
    margin: 0 0 12px;
    color: var(--muted);
}

.notice ul {
    margin: 8px 0 0;
    padding-left: 20px;
    color: var(--text);
}

.notice-success {
    border-color: rgba(22, 131, 74, .25);
    background: rgba(22, 131, 74, .08);
}

.notice-error {
    border-color: rgba(197, 48, 48, .24);
    background: rgba(197, 48, 48, .08);
}

.buy-layout {
    display: grid;
    grid-template-columns: minmax(270px, 360px) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    margin-top: 22px;
}

.buy-side-card,
.buy-form-card {
    padding: clamp(20px, 3vw, 28px);
}

.buy-side-card {
    position: sticky;
    top: 104px;
}

.buy-side-card h2,
.buy-form-card h2 {
    margin: 0 0 14px;
    color: var(--primary-dark);
    font-size: 22px;
    letter-spacing: -.02em;
}

.buy-form-card > .muted,
.muted {
    color: var(--muted);
    line-height: 1.65;
}

.buy-prize-list {
    display: grid;
    gap: 12px;
    margin-bottom: 26px;
}

.buy-prize-item {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 12px;
    align-items: center;
    padding: 12px;
    border-radius: 18px;
    background: #f8fbff;
    border: 1px solid var(--border);
}

.buy-prize-item img {
    width: 72px;
    height: 72px;
    object-fit: cover;
    border-radius: 14px;
}

.buy-prize-item strong {
    display: block;
    color: var(--primary-dark);
    font-size: 14px;
    line-height: 1.35;
}

.buy-prize-item span {
    display: block;
    margin-top: 4px;
    color: var(--muted);
    font-size: 12px;
}

.sorteo-links {
    display: grid;
    gap: 8px;
}

.sorteo-links a {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    background: #f8fbff;
    border: 1px solid var(--border);
    color: var(--text);
    font-weight: 800;
    transition: transform .2s ease, background-color .2s ease, border-color .2s ease;
}

.sorteo-links a:hover {
    transform: translateY(-2px);
    border-color: rgba(21,84,204,.35);
}

.sorteo-links a.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: transparent;
}

.buy-form {
    display: grid;
    gap: 18px;
    margin-top: 20px;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.form-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.buy-form label {
    display: grid;
    gap: 8px;
}

.buy-form label span {
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 900;
}

.buy-form label small {
    color: var(--muted);
    font-weight: 600;
}

.buy-form input,
.buy-form select {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    color: var(--text);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 15px;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.buy-form input:focus,
.buy-form select:focus {
    border-color: rgba(21,84,204,.55);
    box-shadow: 0 0 0 4px rgba(21,84,204,.10);
}

.buy-form input[type="file"] {
    padding: 10px;
    background: #f8fbff;
}

.number-picker {
    display: grid;
    gap: 14px;
    padding: 18px;
    border-radius: 22px;
    background: linear-gradient(180deg, #f8fbff, #ffffff);
    border: 1px solid var(--border);
}

.number-picker-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
}

.number-picker-head h3 {
    margin: 0 0 5px;
    color: var(--primary-dark);
    font-size: 20px;
}

.number-picker-head p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.number-picker-head strong {
    flex: 0 0 auto;
    display: inline-flex;
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--success);
    background: rgba(22, 131, 74, .10);
    font-size: 13px;
    font-weight: 900;
}

.number-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
    gap: 9px;
    max-height: 430px;
    overflow: auto;
    padding: 6px 4px 6px 0;
}

.number-chip {
    min-height: 46px;
    border: 1px solid rgba(21,84,204,.20);
    border-radius: 14px;
    color: var(--primary-dark);
    background: #ffffff;
    cursor: pointer;
    font-size: 14px;
    font-weight: 900;
    box-shadow: 0 8px 16px rgba(15,23,42,.04);
    transition: transform .16s ease, background-color .16s ease, color .16s ease, border-color .16s ease, box-shadow .16s ease;
}

.number-chip:hover {
    transform: translateY(-2px);
    border-color: rgba(21,84,204,.48);
    box-shadow: 0 12px 22px rgba(21,84,204,.10);
}

.number-chip.selected {
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: transparent;
    box-shadow: 0 12px 22px rgba(21,84,204,.24);
}

.number-chip.occupied,
.number-chip:disabled {
    display: none;
}

.buy-total-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 20px;
    border-radius: 20px;
    color: var(--primary-dark);
    background:
        radial-gradient(circle at top right, rgba(246,181,30,.18), transparent 40%),
        rgba(21,84,204,.07);
    border: 1px solid rgba(21,84,204,.18);
}

.buy-total-box span {
    color: var(--muted);
    font-weight: 800;
}

.buy-total-box strong {
    font-size: clamp(24px, 4vw, 34px);
    font-weight: 900;
    letter-spacing: -.04em;
}

.participant-status {
    display: none;
    margin-top: -8px;
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 13px;
    font-weight: 800;
    line-height: 1.45;
}

.participant-status.is-visible {
    display: block;
}

.participant-status.ok {
    color: var(--success);
    background: rgba(22, 131, 74, .10);
    border: 1px solid rgba(22, 131, 74, .24);
}

.participant-status.info {
    color: var(--primary-dark);
    background: rgba(21, 84, 204, .08);
    border: 1px solid rgba(21, 84, 204, .18);
}

.participant-status.error {
    color: var(--danger);
    background: rgba(197, 48, 48, .08);
    border: 1px solid rgba(197, 48, 48, .20);
}

@media (max-width: 1020px) {
    .buy-hero-card {
        grid-template-columns: 1fr;
    }

    .buy-hero-media {
        min-height: 260px;
    }

    .buy-layout {
        grid-template-columns: 1fr;
    }

    .buy-side-card {
        position: static;
    }
}

@media (max-width: 720px) {
    .buy-topbar {
        align-items: flex-start;
        flex-direction: column;
        padding: 14px 16px;
    }

    .buy-topbar-actions,
    .buy-topbar-actions .btn {
        width: 100%;
    }

    .buy-topbar-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .buy-shell {
        width: min(100% - 22px, 1180px);
        padding-top: 20px;
    }

    .buy-hero-card,
    .buy-side-card,
    .buy-form-card {
        border-radius: 20px;
    }

    .hero-stats,
    .mini-stats,
    .form-grid.two {
        grid-template-columns: 1fr;
    }

    .number-picker-head {
        flex-direction: column;
    }

    .number-grid {
        grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
        max-height: 360px;
    }

    .number-chip {
        min-height: 42px;
        border-radius: 12px;
    }

    .buy-total-box {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 420px) {
    .buy-prize-item {
        grid-template-columns: 58px 1fr;
    }

    .buy-prize-item img {
        width: 58px;
        height: 58px;
    }

    .buy-form-card,
    .buy-side-card,
    .buy-hero-card {
        padding: 18px;
    }
}