/* ==========================================================
   Sam Global University — Tournament Registration
   ========================================================== */

:root {
    --navy-950: #0b132b;
    --navy-900: #10193a;
    --navy-800: #1c274d;
    --gold-500: #c9a227;
    --gold-400: #d9b64a;
    --ink-900: #1a1d29;
    --ink-600: #565b6e;
    --ink-400: #8b8fa3;
    --surface: #ffffff;
    --surface-muted: #f6f7fb;
    --border: #e3e5ee;
    --danger: #c23b3b;
    --danger-bg: #fdecec;
    --success-bg: #eaf6ee;
    --success-text: #1f7a41;

    --radius-lg: 18px;
    --radius-md: 10px;
    --radius-sm: 6px;

    --shadow-card: 0 20px 60px -20px rgba(11, 19, 43, 0.18),
                    0 4px 16px -4px rgba(11, 19, 43, 0.08);

    --font-display: "Cormorant Garamond", serif;
    --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--ink-900);
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 16px;
    line-height: 1.5;
}

/* ================= CARD ================= */

.card {
    width: 100%;
    max-width: 640px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, var(--navy-900), var(--navy-800));
    padding: 36px 32px 30px;
    text-align: center;
    position: relative;
}

.card-header::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold-500), transparent);
}

/* Rectangular logo */
.logo-wrap {
    width: 168px;
    height: 64px;
    margin: 0 auto 18px;
    background: var(--surface);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px -6px rgba(0, 0, 0, 0.35);
}

.logo-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 2px;
    display: block;
}

.card-header h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.35rem, 1rem + 1.6vw, 1.9rem);
    color: #fdfdfd;
    margin: 0 0 6px;
    letter-spacing: 0.3px;
}

.card-subtitle {
    margin: 0;
    color: var(--gold-400);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

/* ================= BODY ================= */

.card-body {
    padding: 32px;
}

@media (max-width: 480px) {
    .card-body {
        padding: 24px 20px;
    }
    .card-header {
        padding: 28px 20px 24px;
    }
}

.form-section-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy-900);
    margin: 0 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    position: relative;
}

.form-section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 52px;
    height: 2px;
    background: var(--gold-500);
}

/* ================= MESSAGES ================= */

.alert-message {
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid rgba(31, 122, 65, 0.25);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.error-message {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(194, 59, 59, 0.25);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    font-size: 0.82rem;
    margin-top: 6px;
}

/* ================= FORM ================= */

form {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 20px;
    margin-bottom: 8px;
}

@media (max-width: 560px) {
    .form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ink-600);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--ink-900);
    background: var(--surface-muted);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 11px 13px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold-500);
    background: var(--surface);
    box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--ink-400);
}

.help-text {
    margin-top: 5px;
    font-size: 0.76rem;
    color: var(--ink-400);
}

/* Full-width fields (e.g. long text areas) can span both columns */
.form-group:has(textarea) {
    grid-column: 1 / -1;
}

/* ================= SUBMIT BUTTON ================= */

.btn-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    margin-top: 8px;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
    color: var(--navy-950);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
    box-shadow: 0 10px 24px -8px rgba(201, 162, 39, 0.55);
}

.btn-submit svg {
    width: 18px;
    height: 18px;
    transition: transform 0.15s ease;
}

.btn-submit:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
    box-shadow: 0 14px 30px -8px rgba(201, 162, 39, 0.6);
}

.btn-submit:hover svg {
    transform: translateX(3px);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:focus-visible {
    outline: 3px solid rgba(28, 39, 77, 0.35);
    outline-offset: 2px;
}

/* ================= RECEIPT LINK ================= */

.receipt-link {
    text-align: center;
    margin-top: 18px;
}

.receipt-link a {
    color: var(--navy-800);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1.5px solid transparent;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.receipt-link a:hover {
    color: var(--gold-500);
    border-bottom-color: var(--gold-500);
}

/* ================= SMALL SCREENS ================= */

@media (max-width: 400px) {
    .card-header h2 {
        font-size: 1.2rem;
    }
    .logo-wrap {
        width: 140px;
        height: 54px;
    }
}