/* ============================================================
   TRITON CARPOOL — API DEMO STYLES
   UCSD Brand Colors + Weather API Demo
   ============================================================ */

:root {
    --ucsd-navy: #182B49;
    --ucsd-blue: #006A96;
    --ucsd-gold: #FFCD00;
    --ucsd-turquoise: #00C6D7;

    --bg-color: #f5f7fa;
    --text-color: #182B49;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --code-bg: #1e293b;
    --code-text: #e2e8f0;
    --section-alt-bg: #eef2f7;
}

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

body {
    font-family: 'DM Sans', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, h4 { font-family: 'Instrument Serif', serif; }

/* === Dark Mode === */
.dark-mode { background-color: #0f172a; color: #e2e8f0; }
.dark-mode .section h2 { color: var(--ucsd-gold); }
.dark-mode .weather-box,
.dark-mode .form-container,
.dark-mode .ride-card,
.dark-mode .link-card { background-color: #1e293b; border-color: #334155; }
.dark-mode .weather-result { background-color: #1a365d; border-color: var(--ucsd-blue); }
.dark-mode .section:nth-child(even) { background-color: #1a1f36; }
.dark-mode input, .dark-mode select { background: #0f172a; color: #e2e8f0; border-color: #334155; }
.dark-mode .weather-stat .big { color: var(--ucsd-gold); }
.dark-mode .empty-state { color: #94a3b8; }

/* === Navbar === */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background-color: var(--ucsd-navy);
    box-shadow: 0 2px 16px rgba(0,0,0,0.15);
}
.navbar ul {
    list-style: none; display: flex; align-items: center;
    padding: 0 24px; gap: 4px; overflow-x: auto;
}
.navbar ul li a {
    display: block; padding: 16px 14px;
    color: rgba(255,255,255,0.8); text-decoration: none;
    font-size: 0.85rem; font-weight: 500; transition: color 0.2s; white-space: nowrap;
}
.navbar ul li a:hover { color: var(--ucsd-gold); }
.navbar .nav-brand a { font-weight: 700; color: var(--ucsd-gold); font-size: 1rem; }

#theme-button {
    background: transparent; border: 1.5px solid rgba(255,255,255,0.3);
    color: #fff; padding: 6px 14px; border-radius: 6px; cursor: pointer;
    font-size: 0.8rem; font-family: 'DM Sans', sans-serif; transition: all 0.2s;
}
#theme-button:hover { border-color: var(--ucsd-gold); color: var(--ucsd-gold); }

/* === Header === */
.header-container {
    margin-top: 56px; display: flex; align-items: center; justify-content: space-between;
    padding: 80px 60px 60px;
    background: linear-gradient(135deg, var(--ucsd-navy) 0%, #1a365d 50%, var(--ucsd-blue) 100%);
    color: #fff; min-height: 420px;
}
.header-content { max-width: 640px; }
.header-badge {
    display: inline-block; background: rgba(255,205,0,0.15); color: var(--ucsd-gold);
    padding: 6px 16px; border-radius: 20px; font-size: 0.75rem;
    font-weight: 700; letter-spacing: 1.5px; margin-bottom: 20px;
}
.header-content h1 { font-size: 3.2rem; line-height: 1.15; margin-bottom: 16px; }
.header-content h3 { font-weight: 300; font-size: 1.2rem; opacity: 0.85; margin-bottom: 32px; }
.header-buttons { display: flex; gap: 12px; }
.header-visual { display: flex; align-items: center; justify-content: center; }
.trident-hero { font-size: 120px; opacity: 0.3; animation: float 4s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }

/* === Buttons === */
.btn {
    display: inline-block; padding: 12px 28px; border: none; border-radius: 8px;
    font-family: 'DM Sans', sans-serif; font-size: 0.95rem; font-weight: 600;
    cursor: pointer; transition: all 0.2s; text-decoration: none;
}
.btn-gold { background-color: var(--ucsd-gold); color: var(--ucsd-navy); }
.btn-gold:hover { background-color: #e6b800; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(255,205,0,0.3); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.btn-full { width: 100%; text-align: center; }

/* === Sections === */
.section { padding: 64px 60px; max-width: 1100px; margin: 0 auto; }
.section:nth-child(even) {
    background-color: var(--section-alt-bg); max-width: 100%;
    padding-left: calc((100% - 1100px) / 2 + 60px);
    padding-right: calc((100% - 1100px) / 2 + 60px);
}
.section h2 { font-size: 2.2rem; margin-bottom: 8px; color: var(--ucsd-navy); }
.section h3 { font-weight: 300; font-size: 1.05rem; opacity: 0.7; margin-bottom: 36px; }

/* === Weather Demo === */
.weather-box {
    background: var(--card-bg); border: 2px solid var(--ucsd-gold);
    border-radius: 16px; padding: 36px 32px;
    box-shadow: 0 4px 20px rgba(255,205,0,0.1);
}
.weather-input-row { display: flex; gap: 12px; margin-bottom: 20px; }
.weather-input-row input {
    flex: 1; padding: 12px 16px; border: 2px solid var(--card-border);
    border-radius: 8px; font-family: 'DM Sans', sans-serif; font-size: 0.95rem;
    background: var(--bg-color); color: var(--text-color); transition: border-color 0.2s;
}
.weather-input-row input:focus { outline: none; border-color: var(--ucsd-blue); }

.weather-result {
    background: linear-gradient(135deg, #e8f4fd, #f0fdf4);
    border: 1px solid #bae6fd; border-radius: 12px;
    padding: 24px; min-height: 80px; transition: all 0.3s;
}
.weather-placeholder { opacity: 0.5; font-style: italic; text-align: center; }
.weather-data { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; }
.weather-stat { text-align: center; }
.weather-stat .big { font-size: 2rem; font-weight: 700; color: var(--ucsd-navy); display: block; }
.weather-stat .label { font-size: 0.8rem; opacity: 0.6; display: block; margin-top: 2px; }

.raw-json-toggle { margin-top: 16px; }
.raw-json-toggle summary { cursor: pointer; font-size: 0.85rem; font-weight: 600; color: var(--ucsd-blue); padding: 8px 0; }
.code-block {
    display: block; background: var(--code-bg); color: var(--code-text);
    padding: 20px 24px; border-radius: 10px;
    font-family: 'Courier New', Courier, monospace; font-size: 0.8rem;
    line-height: 1.5; overflow-x: auto; white-space: pre-wrap; word-break: break-word;
}
.raw-json { max-height: 300px; overflow-y: auto; font-size: 0.75rem; }

/* === Loading Spinner === */
.loading-spinner {
    display: inline-block; width: 20px; height: 20px;
    border: 3px solid rgba(0,0,0,0.1); border-top-color: var(--ucsd-blue);
    border-radius: 50%; animation: spin 0.8s linear infinite;
    margin-right: 8px; vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Forms === */
.form-container {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: 16px; padding: 32px; margin-top: 8px;
}
.form-row { display: flex; gap: 16px; margin-bottom: 16px; }
.form-group { flex: 1; display: flex; flex-direction: column; }
.form-group label { font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select {
    padding: 10px 14px; border: 2px solid var(--card-border); border-radius: 8px;
    font-family: 'DM Sans', sans-serif; font-size: 0.9rem;
    background: var(--bg-color); color: var(--text-color); transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--ucsd-blue); }
.field-error { font-size: 0.78rem; color: #ef4444; margin-top: 4px; min-height: 18px; }

/* === Filter Bar === */
.filter-bar { display: flex; gap: 12px; margin-bottom: 24px; }
.filter-bar input {
    flex: 1; padding: 10px 14px; border: 2px solid var(--card-border); border-radius: 8px;
    font-family: 'DM Sans', sans-serif; font-size: 0.9rem;
    background: var(--card-bg); color: var(--text-color);
}
.filter-bar select {
    padding: 10px 14px; border: 2px solid var(--card-border); border-radius: 8px;
    font-family: 'DM Sans', sans-serif; font-size: 0.9rem;
    background: var(--card-bg); color: var(--text-color); cursor: pointer;
}

/* === Rides Grid === */
.rides-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.ride-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: 12px; padding: 24px; transition: transform 0.2s, box-shadow 0.2s;
}
.ride-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
.ride-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.ride-card p { font-size: 0.85rem; margin-bottom: 4px; opacity: 0.8; }
.ride-card .ride-meta { display: flex; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.ride-tag {
    background: #eef2f7; color: var(--ucsd-blue); padding: 4px 10px;
    border-radius: 12px; font-size: 0.75rem; font-weight: 600;
}
.dark-mode .ride-tag { background: #334155; color: var(--ucsd-turquoise); }
.ride-card .btn { margin-top: 16px; width: 100%; text-align: center; font-size: 0.85rem; padding: 8px; }
.empty-state { text-align: center; padding: 40px; opacity: 0.5; font-style: italic; }

/* === Connect Section === */
.connect-container { display: flex; gap: 20px; width: 100%; margin-bottom: 16px; }
.connect-para { width: 55%; padding-right: 10px; }
.connect-participants { width: 45%; }
.connect-participants p { font-size: 0.9rem; margin-bottom: 6px; }
#connect-count { font-size: 0.95rem; margin-bottom: 24px; font-weight: 600; }

/* === Modal === */
.modal-overlay {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 2000;
    align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--card-bg); border-radius: 16px; padding: 40px;
    text-align: center; max-width: 420px; width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.dark-mode .modal { background: #1e293b; }
.modal-icon { font-size: 3rem; margin-bottom: 12px; }
.modal h3 { font-size: 1.4rem; margin-bottom: 8px; }
.modal p { font-size: 0.9rem; opacity: 0.7; margin-bottom: 20px; }

/* === Footer === */
.footer {
    background: var(--ucsd-navy); color: rgba(255,255,255,0.7);
    text-align: center; padding: 40px 60px;
}
.footer-brand { font-size: 1.2rem; font-weight: 700; color: var(--ucsd-gold); margin-bottom: 8px; }
.footer p { font-size: 0.85rem; margin-bottom: 4px; }

/* === Scroll Reveal === */
.revealable {
    --reveal-distance: 100px;
    opacity: 0; transition: all 1.2s ease;
    position: relative; transform: translateY(var(--reveal-distance));
}
.active { transform: translateY(0); opacity: 1; }

/* === Responsive === */
@media (max-width: 768px) {
    .header-container { flex-direction: column; padding: 60px 24px 40px; text-align: center; }
    .header-content h1 { font-size: 2.2rem; }
    .header-buttons { justify-content: center; }
    .header-visual { display: none; }
    .section { padding: 48px 24px; }
    .section:nth-child(even) { padding-left: 24px; padding-right: 24px; }
    .weather-input-row, .form-row, .connect-container, .filter-bar { flex-direction: column; }
    .connect-para, .connect-participants { width: 100%; padding-right: 0; }
    .navbar ul { padding: 0 12px; gap: 0; }
    .navbar ul li a { padding: 14px 8px; font-size: 0.75rem; }
}