/* ── Crimson + Rose palette ── */
:root {
    --bg:           #fff1f2;
    --header-bg:    #1a0a0e;
    --nav-bg:       #2d0f17;
    --accent:       #f43f5e;
    --accent-hover: #e11d48;
    --accent-dim:   rgba(244, 63, 94, 0.12);
    --card-bg:      #ffffff;
    --heading:      #1a0a0e;
    --text:         #1c0508;
    --muted:        #6b7280;
    --border:       #fecdd3;
    --input-border: #fda4af;
    --code-bg:      #0d0407;
    --code-text:    #fda4af;
    --demo-bg:      #fff1f2;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

/* ── Top header ── */
.top-header {
    background: var(--header-bg);
    color: white;
    padding: 26px 40px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    border-bottom: 3px solid var(--accent);
}

.top-header h1 {
    margin: 0;
    font-size: 1.6rem;
    letter-spacing: 0.5px;
    color: #fff;
}

.top-header h1 span {
    color: var(--accent);
}

.top-header p {
    margin: 5px 0 0;
    color: #fda4af;
    font-size: 0.88rem;
    letter-spacing: 0.3px;
}

.login-status a {
    color: #ffffff;
    background: var(--accent);
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    margin-left: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: background 0.2s, transform 0.1s;
}

.login-status a:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* ── Top nav bar ── */
.topnav {
    background: var(--nav-bg);
    padding: 8px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(244, 63, 94, 0.2);
    gap: 12px;
}

.topnav .home-link {
    color: #fecdd3;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    letter-spacing: 0.4px;
    border: 1px solid transparent;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.topnav .home-link:hover {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: rgba(244, 63, 94, 0.35);
}

/* ── Burger button ── */
.burger-btn {
    background: transparent;
    border: 1px solid rgba(244, 63, 94, 0.3);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    color: #fda4af;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.burger-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-dim);
}

.burger-btn .burger-label {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.4px;
}

.burger-icon {
    flex-shrink: 0;
    transition: opacity 0.2s;
}

.chevron-icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.burger-btn.open .chevron-icon {
    transform: rotate(180deg);
}

.burger-btn.open {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-dim);
}

/* ── Activity dropdown ── */
.nav-dropdown {
    background: #200a0f;
    display: none;
    flex-direction: column;
    border-bottom: 2px solid var(--accent);
}

.nav-dropdown.open {
    display: flex;
}

.nav-dropdown a {
    color: #fda4af;
    text-decoration: none;
    padding: 11px 30px;
    font-size: 13px;
    border-bottom: 1px solid #3d1520;
    transition: background 0.15s, color 0.15s, padding-left 0.15s;
}

.nav-dropdown a:last-child {
    border-bottom: none;
}

.nav-dropdown a:hover {
    background: var(--accent-dim);
    color: var(--accent);
    padding-left: 40px;
}

/* ── Main container ── */
.container {
    width: 92%;
    max-width: 1100px;
    margin: 32px auto;
}

/* ── Cards ── */
.card {
    background: var(--card-bg);
    padding: 26px 28px;
    border-radius: 14px;
    margin-bottom: 22px;
    box-shadow: 0 4px 20px rgba(26, 10, 14, 0.08);
    border-left: 4px solid var(--accent);
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 6px 28px rgba(26, 10, 14, 0.13);
}

.card h2 {
    margin-top: 0;
    color: var(--heading);
    font-size: 1.18rem;
    letter-spacing: 0.3px;
}

.card h2::after {
    content: '';
    display: block;
    width: 36px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 6px;
}

/* ── Demo area ── */
.demo-area {
    background: var(--demo-bg);
    border: 1px solid var(--border);
    padding: 20px;
    border-radius: 10px;
    margin: 15px 0;
}

/* ── Buttons ── */
.source-btn,
.btn {
    border: none;
    background: var(--accent);
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 7px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    margin: 5px 4px 5px 0;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
}

.source-btn:hover,
.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(244, 63, 94, 0.4);
}

/* ── Source code block ── */
.source-code {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 20px;
    border-radius: 10px;
    overflow-x: auto;
    margin-top: 12px;
    font-size: 0.88rem;
    font-family: 'Consolas', 'Courier New', monospace;
    border-left: 3px solid var(--accent);
    line-height: 1.6;
}

/* ── Tables ── */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(26, 10, 14, 0.07);
}

table th,
table td {
    border: 1px solid var(--border);
    padding: 12px 14px;
    text-align: left;
}

table th {
    background: var(--header-bg);
    color: var(--accent);
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.6px;
    text-transform: uppercase;
}

table tr:nth-child(even) td {
    background: #fff1f2;
}

table tr:hover td {
    background: #ffe4e6;
}

/* ── Form inputs ── */
input,
select,
textarea {
    width: 100%;
    padding: 11px 13px;
    margin-top: 5px;
    margin-bottom: 14px;
    border: 1.5px solid var(--input-border);
    border-radius: 7px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: #fff1f2;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.18);
}

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

/* ── Alerts ── */
.alert {
    padding: 13px 16px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 0.93rem;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border-left: 4px solid #22c55e;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid #ef4444;
}

/* ── Gallery grid ── */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.gallery-item {
    background: var(--demo-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
    transition: box-shadow 0.2s, transform 0.2s;
}

.gallery-item:hover {
    box-shadow: 0 6px 20px rgba(244, 63, 94, 0.18);
    transform: translateY(-2px);
}

/* ── Footer ── */
.footer {
    text-align: center;
    background: var(--header-bg);
    color: #6b7280;
    padding: 22px;
    margin-top: 40px;
    border-top: 3px solid var(--accent);
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

.footer p {
    margin: 0;
}

/* ── Responsive ── */
@media (max-width: 700px) {
    .top-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .card {
        padding: 20px 18px;
    }
}