/* ============================================================
   Master DMT — UAB Introduction Course Registration
   Matching the look & feel of masterdmt.uab.cat
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;500;600;700&display=swap');

:root {
    --blue: #2ea3f2;
    --blue-dark: #1595ce;
    --text-dark: #333333;
    --text-medium: #666666;
    --text-light: #999999;
    --bg: #ffffff;
    --bg-light: #f7f7f7;
    --border: #e2e2e2;
    --border-light: #eee;
    --success: #27ae60;
    --success-bg: #eafaf1;
    --error: #e74c3c;
    --error-bg: #fceae8;
    --radius: 3px;
    --shadow: 0 0 7px rgba(0, 0, 0, 0.07);
}

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

body {
    font-family: "Open Sans", Arial, sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-dark);
    background: var(--bg);
    line-height: 1.7em;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--blue-dark);
}

/* ── Header ──────────────────────────────────────────────── */
.site-header {
    background: #fff;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
    padding: 18px 0;
    position: relative;
    z-index: 100;
}

.site-header .header-inner {
    width: 80%;
    max-width: 1080px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-header .logo img {
    max-height: 70px;
    width: auto;
}

.site-header .header-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
}

.site-header .header-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-medium);
    margin-left: 24px;
    transition: color 0.2s;
}

.site-header .header-nav a:hover {
    color: var(--blue);
}

/* ── Page title banner ───────────────────────────────────── */
.page-banner {
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    padding: 40px 0;
    text-align: center;
}

.page-banner h1 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1em;
    margin-bottom: 8px;
}

.page-banner p {
    font-size: 16px;
    color: var(--text-medium);
    font-weight: 400;
}

/* ── Main content ────────────────────────────────────────── */
.main-content {
    flex: 1;
    width: 80%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 50px 0;
}

.main-content.narrow {
    max-width: 640px;
}

.main-content.wide {
    max-width: 1200px;
}

/* ── Card ────────────────────────────────────────────────── */
.card {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px 40px;
    margin-bottom: 30px;
}

/* ── Form elements ───────────────────────────────────────── */
.form-group {
    margin-bottom: 20px;
}

.form-group label.field-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.form-group .hint {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 6px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-row .form-group {
    flex: 1;
}

.form-row-3 > .form-group {
    margin-bottom: 10px;
}

.form-row-3 > .form-group:last-child {
    margin-bottom: 0;
}

.form-row-3 > .form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 0;
}

.form-row-3 > .form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.field-label-sub {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-medium);
    margin-bottom: 4px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #bbb;
    border-radius: var(--radius);
    font-size: 14px;
    font-family: "Open Sans", Arial, sans-serif;
    color: var(--text-dark);
    background: #fff;
    transition: border-color 0.2s;
    line-height: 1.7em;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2d3940;
}

.required-mark {
    color: var(--error);
    margin-left: 2px;
}

/* ── Radio group ─────────────────────────────────────────── */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 6px;
}

.radio-group label {
    display: flex;
    align-items: center;
    font-weight: 400;
    cursor: pointer;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: background 0.15s, border-color 0.2s;
    font-size: 14px;
}

.radio-group label:hover {
    background: var(--bg-light);
    border-color: #bbb;
}

.radio-group input[type="radio"] {
    margin-right: 10px;
    accent-color: var(--blue);
}

/* ── Checkbox ────────────────────────────────────────────── */
.checkbox-label {
    display: flex;
    align-items: center;
    font-weight: 400;
    cursor: pointer;
    gap: 8px;
    margin-top: 6px;
    font-size: 14px;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--blue);
}

/* ── File input ──────────────────────────────────────────── */
.file-input-wrapper {
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.file-input-btn {
    display: inline-block;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    font-family: "Open Sans", Arial, sans-serif;
    color: var(--text-dark);
    background: var(--bg-light);
    border: 1px solid #bbb;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.15s, border-color 0.2s;
    white-space: nowrap;
}

.file-input-btn:hover {
    background: #eee;
    border-color: #999;
}

.file-input-name {
    font-size: 13px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── Buttons (Divi-style) ────────────────────────────────── */
.et-btn {
    display: inline-block;
    padding: 0.3em 1em;
    font-size: 20px;
    font-weight: 500;
    font-family: "Open Sans", Arial, sans-serif;
    color: var(--blue);
    background: transparent;
    border: 2px solid var(--blue);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
    letter-spacing: 0.02em;
}

.et-btn:hover {
    padding: 0.3em 2em 0.3em 0.7em;
    background: rgba(46, 163, 242, 0.05);
    color: var(--blue);
}

.et-btn-fill {
    background: var(--blue);
    color: #fff;
    border-color: var(--blue);
}

.et-btn-fill:hover {
    background: var(--blue-dark);
    border-color: var(--blue-dark);
    color: #fff;
}

.et-btn-danger {
    color: var(--error);
    border-color: var(--error);
}

.et-btn-danger:hover {
    background: var(--error);
    color: #fff;
    border-color: var(--error);
}

.et-btn-small {
    font-size: 13px;
    padding: 0.2em 0.7em;
}

.et-btn-small:hover {
    padding: 0.2em 1.2em 0.2em 0.5em;
}

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.6;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid #a3d9b1;
}

.alert-error {
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid #e6b0aa;
}

.alert ul {
    margin-top: 6px;
    padding-left: 20px;
}

/* ── Table ───────────────────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
    margin-top: 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

thead {
    background: var(--bg-light);
    border-bottom: 3px solid var(--blue);
}

th {
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-medium);
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

td a {
    color: var(--blue);
}

td a:hover {
    color: var(--blue-dark);
    text-decoration: underline;
}

/* ── Payment cell (admin) ────────────────────────────────── */
.payment-cell {
    min-width: 160px;
}

.payment-form {
    display: flex;
    align-items: center;
    gap: 6px;
}

.payment-ref-input {
    width: 100px;
    padding: 3px 6px;
    font-size: 12px;
    font-family: "Open Sans", Arial, sans-serif;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
}

.payment-ref {
    display: block;
    font-size: 11px;
    color: var(--text-medium);
    margin-top: 2px;
}

.payment-undo {
    display: inline-block;
    font-size: 11px;
    color: var(--text-light);
    margin-top: 2px;
    cursor: pointer;
}

.payment-undo:hover {
    color: var(--error);
    text-decoration: underline;
}

/* ── Login form ──────────────────────────────────────────── */
.login-box {
    max-width: 380px;
    margin: 0 auto;
}

/* ── Badge ───────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-yes {
    background: var(--success-bg);
    color: var(--success);
}

.badge-no {
    background: #f0f0f0;
    color: var(--text-light);
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
    background: #333;
    color: rgba(255, 255, 255, 0.6);
    padding: 30px 0;
    text-align: center;
    font-size: 12px;
    margin-top: auto;
}

.site-footer a {
    color: rgba(255, 255, 255, 0.8);
}

.site-footer a:hover {
    color: #fff;
}

/* ── Utilities ───────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 980px) {
    .main-content,
    .site-header .header-inner {
        width: 90%;
    }

    .card {
        padding: 24px;
    }
}

@media (max-width: 767px) {
    .main-content,
    .site-header .header-inner {
        width: 92%;
        padding: 30px 0;
    }

    .page-banner {
        padding: 25px 0;
    }

    .page-banner h1 {
        font-size: 22px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-row-3 > .form-row {
        flex-direction: row;
        gap: 20px;
    }

    .card {
        padding: 20px 16px;
    }

    .site-header .header-nav {
        display: none;
    }

    th, td {
        padding: 8px;
        font-size: 12px;
    }

    .et-btn {
        font-size: 16px;
    }
}

@media (max-width: 479px) {
    .page-banner h1 {
        font-size: 18px;
    }

    .site-header .logo img {
        max-height: 50px;
    }

}