/* ============================================================
   Congress System - Professional Scientific Conference Design
   Inspired by medicoebambino.com aesthetic
   Palette: Deep forest green + warm earth tones
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Source+Serif+4:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    --congress-green: #1B6B3A;
    --congress-green-light: #228B4A;
    --congress-green-dark: #0F4D28;
    --congress-green-pale: #E8F5ED;
    --congress-earth: #5C4033;
    --congress-gold: #B8860B;
    --congress-gold-light: #DAA520;
    --congress-navy: #0d1520;
    --danger: #B80010;
    --warning: #B8860B;
    --gray-50: #FAFAF9;
    --gray-100: #F4F5F7;
    --gray-200: #E5E7EB;
    --gray-300: #CED4DA;
    --gray-400: #9CA3AF;
    --gray-500: #6C757D;
    --gray-600: #495057;
    --gray-700: #374151;
    --gray-800: #212529;
    --gray-900: #111827;
    --border: #e0e0e0;
    --radius: 3px;
    --radius-lg: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 6px 24px rgba(0,0,0,0.12);
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
}

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

body {
    font-family: var(--sans);
    color: var(--gray-800);
    background: #fff;
    line-height: 1.65;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

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

/* ---- Navbar ---- */
.navbar {
    background: var(--congress-navy);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--congress-green);
}
.nav-container { display: flex; align-items: center; justify-content: space-between; min-height: 56px; }
.nav-brand {
    color: #fff; text-decoration: none; font-weight: 700; font-size: 15px;
    letter-spacing: -0.01em;
}
.nav-menu { display: flex; align-items: center; gap: 2px; }
.nav-menu a {
    color: rgba(255,255,255,0.75); text-decoration: none; padding: 6px 12px;
    font-size: 13px; font-weight: 500; transition: color 0.15s;
    border-radius: var(--radius);
}
.nav-menu a:hover { color: #fff; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; padding: 8px; }

/* ---- Buttons ---- */
.btn {
    display: inline-block; padding: 10px 24px; border-radius: var(--radius);
    font-weight: 600; font-size: 14px; text-decoration: none;
    cursor: pointer; border: 2px solid transparent; transition: all 0.15s;
    text-align: center; line-height: 1.4; font-family: var(--sans);
    letter-spacing: 0.01em;
}
.btn-primary { background: var(--congress-green); color: #fff; border-color: var(--congress-green); }
.btn-primary:hover { background: var(--congress-green-dark); border-color: var(--congress-green-dark); color: #fff; }
.btn-accent { background: var(--congress-gold); color: #fff; border-color: var(--congress-gold); }
.btn-accent:hover { background: var(--congress-gold-light); border-color: var(--congress-gold-light); color: #fff; }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; }
.btn-outline-dark { background: transparent; color: var(--congress-green); border-color: var(--congress-green); }
.btn-outline-dark:hover { background: var(--congress-green); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-sm { padding: 5px 14px; font-size: 12px; }
.btn-lg { padding: 14px 32px; font-size: 15px; }
.btn-block { display: block; width: 100%; }

/* ---- Hero ---- */
.hero {
    position: relative;
    background-size: cover;
    background-position: center 30%;
    min-height: 440px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}
.hero-overlay {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(160deg, rgba(15,77,40,0.88) 0%, rgba(27,107,58,0.78) 50%, rgba(92,64,51,0.7) 100%);
}
.hero-content { position: relative; z-index: 1; padding: 48px 24px; max-width: 680px; }
.hero h1 {
    font-family: var(--serif); font-size: 2.6em; font-weight: 700;
    margin-bottom: 8px; line-height: 1.15; letter-spacing: -0.02em;
}
.hero h2 {
    font-family: var(--serif); font-size: 1.1em; font-weight: 400;
    opacity: 0.9; margin-bottom: 6px; font-style: italic; line-height: 1.4;
}
.hero .hero-meta { font-size: 1.05em; margin: 20px 0; opacity: 0.95; font-weight: 500; }
.hero-actions { margin-top: 28px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---- Cards ---- */
.card {
    background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow);
    padding: 28px; margin-bottom: 20px; border: 1px solid var(--border);
}
.card-header { border-bottom: 2px solid var(--gray-100); padding-bottom: 14px; margin-bottom: 18px; }
.card-header h2 { font-size: 18px; color: var(--congress-green-dark); font-weight: 700; }
.card-header h3 { font-size: 14px; color: var(--gray-500); font-weight: 400; margin-top: 4px; }

/* ---- Forms ---- */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 5px; color: var(--gray-700); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
.form-group small { display: block; color: var(--gray-400); font-size: 12px; margin-top: 4px; }
.form-control {
    width: 100%; padding: 9px 12px; border: 1px solid var(--gray-300);
    border-radius: var(--radius); font-size: 14px; font-family: var(--sans);
    transition: border-color 0.15s, box-shadow 0.15s;
    background: #fff; color: var(--gray-800);
}
.form-control:focus { border-color: var(--congress-green); outline: none; box-shadow: 0 0 0 3px rgba(27,107,58,0.12); }
select.form-control { appearance: auto; }
textarea.form-control { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-check { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.form-check input[type="checkbox"],
.form-check input[type="radio"] { width: 16px; height: 16px; accent-color: var(--congress-green); }

/* ---- Alerts ---- */
.alert {
    padding: 12px 18px; border-radius: var(--radius); margin: 14px 0;
    font-size: 14px; transition: opacity 0.3s; border-left: 4px solid;
}
.alert-success { background: var(--congress-green-pale); color: var(--congress-green-dark); border-left-color: var(--congress-green); }
.alert-error { background: #fef2f2; color: #991b1b; border-left-color: var(--danger); }
.alert-info { background: #f0f9ff; color: #1e40af; border-left-color: #3b82f6; }
.alert-warning { background: #fffbeb; color: #92400e; border-left-color: var(--warning); }

/* ---- Tables ---- */
.table-responsive { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; margin: 14px 0; }
table.table th, table.table td { padding: 11px 16px; text-align: left; border-bottom: 1px solid var(--gray-200); }
table.table th {
    background: var(--gray-50); font-weight: 600; color: var(--gray-600);
    font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
}
table.table tr:hover td { background: var(--gray-50); }
table.table .text-right { text-align: right; }

/* ---- Fee table ---- */
.fee-table { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.fee-table th { background: var(--congress-green-dark); color: #fff; font-size: 12px; }
.fee-table td { font-size: 14px; }
.fee-table .price { font-weight: 700; color: var(--congress-green-dark); }
.early-badge {
    display: inline-block; background: var(--congress-gold); color: #fff;
    padding: 2px 10px; border-radius: 2px; font-size: 10px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
}

/* ---- Sections ---- */
.section { padding: 52px 0; }
.section-alt { background: var(--gray-100); }
.section h2 {
    font-family: var(--serif); font-size: 1.7em; color: var(--congress-green-dark);
    margin-bottom: 8px; font-weight: 700; letter-spacing: -0.01em;
}
.section h3 {
    font-size: 1em; color: var(--gray-500); margin-bottom: 20px; font-weight: 400;
}

/* ---- Info grid ---- */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 20px; }
.info-card {
    background: #fff; border-radius: var(--radius-lg); padding: 24px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--border);
    border-top: 3px solid var(--congress-green);
}
.info-card h3 { color: var(--congress-green-dark); font-size: 15px; margin-bottom: 10px; font-family: var(--sans); font-weight: 700; }
.info-card p { color: var(--gray-600); font-size: 14px; line-height: 1.6; }

/* ---- Auth pages ---- */
.auth-container { max-width: 420px; margin: 40px auto; padding: 0 20px; }
.auth-container .card { padding: 32px; }
.auth-container h1 { font-family: var(--serif); font-size: 22px; color: var(--congress-green-dark); margin-bottom: 4px; text-align: center; }
.auth-container p.subtitle { color: var(--gray-500); text-align: center; margin-bottom: 22px; font-size: 13px; }
.auth-links { text-align: center; margin-top: 14px; font-size: 13px; color: var(--gray-500); }
.auth-links a { color: var(--congress-green); text-decoration: none; font-weight: 500; }
.auth-links a:hover { text-decoration: underline; }

/* ---- Dashboard ---- */
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin: 20px 0; }
.status-badge {
    display: inline-block; padding: 3px 10px; border-radius: 2px;
    font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
}
.status-pending { background: #FEF3C7; color: #92400E; }
.status-preregistered { background: #E0F2FE; color: #075985; }
.status-callback_ok { background: #E0E7FF; color: #3730A3; }
.status-completed { background: var(--congress-green-pale); color: var(--congress-green-dark); }
.status-cancelled { background: #E5E7EB; color: #374151; }
.status-failed { background: #FEE2E2; color: #991B1B; }
.status-submitted { background: #DBEAFE; color: #1E40AF; }
.status-accepted { background: var(--congress-green-pale); color: var(--congress-green-dark); }
.status-rejected { background: #FEE2E2; color: #991B1B; }
.status-under_review { background: #FEF3C7; color: #92400E; }
.status-revision_requested { background: #FEF3C7; color: #92400E; }

/* ---- Gallery ---- */
.gallery-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 20px 0; }
.gallery-row img { width: 100%; height: 220px; object-fit: cover; border-radius: var(--radius-lg); }

/* ---- Footer ---- */
.footer {
    background: var(--congress-navy); color: rgba(255,255,255,0.65);
    padding: 36px 0; text-align: center; font-size: 13px; margin-top: 0;
    border-top: 3px solid var(--congress-green);
}
.footer a { color: rgba(255,255,255,0.85); }
.footer-credits { margin-top: 8px; font-size: 11px; }
.footer-photos { margin-top: 4px; font-size: 10px; opacity: 0.5; }

/* ---- GDPR Cookie Banner ---- */
.cookie-banner {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999;
    background: var(--congress-navy); color: rgba(255,255,255,0.9);
    padding: 16px 24px; font-size: 13px; line-height: 1.5;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}
.cookie-banner a { color: var(--congress-gold-light); }
.cookie-banner .cookie-actions { display: flex; gap: 8px; flex-shrink: 0; }
.cookie-banner .btn { padding: 7px 18px; font-size: 12px; }

/* ---- Privacy ---- */
.privacy-content { max-width: 720px; margin: 0 auto; }
.privacy-content h3 { margin-top: 24px; margin-bottom: 8px; color: var(--congress-green-dark); }
.privacy-content p, .privacy-content ul { margin-bottom: 12px; font-size: 14px; color: var(--gray-600); line-height: 1.7; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-menu {
        display: none; flex-direction: column; position: absolute;
        top: 56px; left: 0; right: 0; background: var(--congress-navy);
        padding: 12px; border-top: 1px solid rgba(255,255,255,0.1);
    }
    .nav-menu.active { display: flex; }
    .hero h1 { font-size: 1.8em; }
    .hero { min-height: 340px; }
    .form-row { grid-template-columns: 1fr; }
    .gallery-row { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .fee-table { font-size: 13px; }
    .fee-table th, .fee-table td { padding: 8px 10px; }
    .cookie-banner { flex-direction: column; text-align: center; }
}