/* =========================================================
   SPARKO SOLO — Form Pemesanan Kaos
   Palet: hitam pekat #0D0D0D, putih #FAFAFA, aksen kuning lintasan #E8FF3D,
   abu track #7A7A7A. Terinspirasi dari nomor dada pelari & garis lintasan atletik.
   ========================================================= */

:root {
    --ink: #0D0D0D;
    --paper: #FAFAFA;
    --accent: #E8FF3D;
    --track-gray: #7A7A7A;
    --line: #E4E4E4;
    --danger: #E5484D;
    --success: #1F8A3B;
    --font-display: 'Archivo Black', 'Arial Black', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Roboto Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

body {
    background-image:
        repeating-linear-gradient(180deg, transparent, transparent 79px, var(--line) 79px, var(--line) 80px);
}

.wrap {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 0 60px;
}

/* ---------- HEADER / BIB NUMBER STYLE ---------- */
.header {
    background: var(--ink);
    color: var(--paper);
    padding: 28px 24px 24px;
    position: relative;
    overflow: hidden;
}

.header::after {
    content: "";
    position: absolute;
    right: -40px;
    top: -40px;
    width: 160px;
    height: 160px;
    border: 3px solid var(--accent);
    border-radius: 50%;
    opacity: 0.25;
}

.bib-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    z-index: 1;
}

.brand-title {
    font-family: var(--font-display);
    font-size: 34px;
    line-height: 1;
    letter-spacing: -0.5px;
    margin: 0;
}

.brand-sub {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--accent);
    text-transform: uppercase;
    margin-top: 8px;
}

.bib-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    text-align: right;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 6px 10px;
    border-radius: 4px;
    color: var(--paper);
    white-space: nowrap;
}

.bib-tag strong {
    display: block;
    color: var(--accent);
    font-size: 13px;
}

/* ---------- SECTION ---------- */
.section {
    padding: 28px 24px;
    border-bottom: 1px solid var(--line);
}

.section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--track-gray);
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-label .num {
    background: var(--ink);
    color: var(--paper);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

/* ---------- SIZE CHART ---------- */
.size-chart-img {
    width: 100%;
    display: block;
    border: 1px solid var(--line);
    border-radius: 8px;
}

/* ---------- FORM ---------- */
.field {
    margin-bottom: 18px;
}

.field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}

.field .hint {
    font-size: 12px;
    color: var(--track-gray);
    font-weight: 400;
    margin-left: 4px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select {
    width: 100%;
    padding: 13px 14px;
    border: 2px solid var(--ink);
    border-radius: 6px;
    font-size: 15px;
    font-family: var(--font-body);
    background: var(--paper);
    color: var(--ink);
    appearance: none;
    -webkit-appearance: none;
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%230D0D0D' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

input:focus, select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(232,255,61,0.5);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

/* ---------- PRICE DISPLAY ---------- */
.price-box {
    background: var(--ink);
    color: var(--paper);
    border-radius: 8px;
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
}

.price-box .label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--track-gray);
}

.price-box .amount {
    font-family: var(--font-display);
    font-size: 26px;
    color: var(--accent);
}

.price-box .amount.empty {
    color: var(--track-gray);
    font-size: 16px;
    font-family: var(--font-body);
}

/* ---------- SUBMIT ---------- */
.btn-submit {
    width: 100%;
    background: var(--accent);
    color: var(--ink);
    border: none;
    padding: 18px;
    font-family: var(--font-display);
    font-size: 16px;
    letter-spacing: 0.5px;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 8px;
    text-transform: uppercase;
    transition: transform 0.12s ease;
}

.btn-submit:active {
    transform: scale(0.98);
}

.btn-submit:disabled {
    background: var(--line);
    color: var(--track-gray);
    cursor: not-allowed;
}

.error-msg {
    color: var(--danger);
    font-size: 13px;
    margin-top: 6px;
    display: none;
}

.form-error-banner {
    background: #FDECEC;
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 12px 14px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 18px;
    display: none;
}

/* ---------- FOOTER NOTE ---------- */
.footer-note {
    padding: 20px 24px;
    text-align: center;
    font-size: 12px;
    color: var(--track-gray);
    font-family: var(--font-mono);
}

@media (max-width: 480px) {
    .brand-title { font-size: 26px; }
    .grid-2 { grid-template-columns: 1fr; }
}