/* ============================================================
   LinkSnip — base styles
   ============================================================ */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-text: #1f2937;
    --color-muted: #6b7280;
    --color-border: #e5e7eb;
    --color-bg: #f9fafb;
    --color-success-bg: #ecfdf5;
    --color-success-text: #047857;
    --color-error-bg: #fef2f2;
    --color-error-text: #b91c1c;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 20px;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 12px; }
.muted { color: var(--color-muted); }

/* ---- Header ---- */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
}
.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}
.logo span { color: var(--color-primary); }
.main-nav { display: flex; align-items: center; gap: 16px; }
.nav-user { color: var(--color-muted); font-size: 0.9rem; }

/* ---- Buttons ---- */
.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-ghost { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn-ghost:hover { background: #f3f4f6; }
.btn-danger { background: #fee2e2; color: #b91c1c; border-color: #fecaca; }
.btn-danger:hover { background: #fecaca; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-lg { padding: 12px 24px; font-size: 1.05rem; }
.btn-sm { padding: 5px 10px; font-size: 0.85rem; }

/* ---- Flash messages ---- */
.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin: 20px 0;
}
.flash ul { margin: 0; padding-left: 18px; }
.flash-success { background: var(--color-success-bg); color: var(--color-success-text); }
.flash-error { background: var(--color-error-bg); color: var(--color-error-text); }

/* ---- Hero / landing ---- */
.hero {
    text-align: center;
    padding: 80px 20px 50px;
}
.hero h1 { font-size: 2.6rem; }
.hero-sub {
    max-width: 560px;
    margin: 0 auto 28px;
    color: var(--color-muted);
    font-size: 1.1rem;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; }

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px 20px 80px;
}
.feature-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

/* ---- Auth pages ---- */
.auth-card {
    max-width: 420px;
    margin: 60px auto;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
}
.auth-card form { display: flex; flex-direction: column; gap: 6px; margin: 16px 0; }
.auth-card label { font-size: 0.85rem; font-weight: 600; margin-top: 10px; }
.auth-card input {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
}
.auth-card button { margin-top: 16px; }

/* ---- Dashboard ---- */
.dashboard-header { margin: 32px 0 16px; }

.card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.create-link-form .form-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.form-row .grow { flex: 3 1 280px; }
.form-row .grow-small { flex: 1 1 160px; }
.form-row input {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
}
.form-hint { font-size: 0.82rem; margin: 8px 2px 0; }

/* ---- Edit link short-code row ---- */
.edit-short-code-row {
    display: flex;
    align-items: center;
    gap: 6px;
}
.edit-short-code-row input { flex: 1; }

.links-table-wrap { overflow-x: auto; }
.links-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.links-table th, .links-table td {
    text-align: left;
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.92rem;
    vertical-align: middle;
}
.links-table th { background: #f3f4f6; font-weight: 600; }
.links-table .truncate {
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.short-link { font-weight: 600; }
.actions-cell { display: flex; gap: 6px; align-items: center; white-space: nowrap; }
.inline-form { display: inline; }

/* ---- Analytics ---- */
.back-link { display: inline-block; margin: 24px 0 8px; font-size: 0.9rem; }
.truncate-inline {
    display: inline-block;
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: bottom;
}
.stat-cards { display: flex; gap: 16px; margin-bottom: 20px; }
.stat-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px 28px;
    text-align: center;
}
.stat-value { display: block; font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-label { color: var(--color-muted); font-size: 0.85rem; }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 160px;
    padding-top: 10px;
}
.chart-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    height: 100%;
}
.chart-col-bar {
    width: 100%;
    max-width: 22px;
    background: var(--color-primary);
    border-radius: 3px 3px 0 0;
}
.chart-col-label {
    font-size: 0.65rem;
    color: var(--color-muted);
    margin-top: 6px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 0.9rem;
}
.bar-label { flex: 0 0 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track {
    flex: 1;
    background: #f3f4f6;
    border-radius: 4px;
    height: 10px;
    overflow: hidden;
}
.bar-fill { display: block; height: 100%; background: var(--color-primary); }
.bar-value { flex: 0 0 30px; text-align: right; color: var(--color-muted); }

/* ---- QR page ---- */
.qr-card {
    max-width: 420px;
    margin: 40px auto;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
}
.qr-image {
    width: 260px;
    height: 260px;
    margin: 20px auto;
    display: block;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}
.qr-actions { display: flex; gap: 10px; justify-content: center; margin-top: 16px; }

/* ---- Footer ---- */
.site-footer {
    margin-top: 60px;
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 0.85rem;
}

/* ---- Responsive ---- */
@media (max-width: 720px) {
    .features { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; gap: 10px; }
}