/* ═══════════════════════════════════════════════════════
   Link Tracker – Admin Styles
   ═══════════════════════════════════════════════════════ */

:root {
    --bg: #f0f2f5;
    --card: #ffffff;
    --primary: #1a73e8;
    --primary-hover: #1557b0;
    --primary-ring: rgba(26,115,232,.2);
    --text: #202124;
    --text2: #5f6368;
    --text3: #80868b;
    --border: #dadce0;
    --border-hover: #bdc1c6;
    --green: #1e8e3e;
    --green-bg: #e6f4ea;
    --red: #d93025;
    --red-bg: #fce8e6;
    --amber: #e37400;
    --amber-bg: #fef7e0;
    --blue: #1a73e8;
    --blue-bg: #e8f0fe;
    --purple: #7c3aed;
    --purple-bg: #ede9fe;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(60,64,67,.12), 0 1px 2px rgba(60,64,67,.06);
    --shadow-lg: 0 4px 12px rgba(60,64,67,.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* ─── Auth pages ─── */
.auth-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; padding: 1.25rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-card {
    width: min(100%, 400px);
    background: var(--card);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
    animation: fadeUp .5s ease;
}

.auth-logo { text-align: center; margin-bottom: 2rem; }
.auth-logo h1 { font-size: 1.5rem; font-weight: 700; margin-top: .75rem; }
.auth-subtitle { color: var(--text2); font-size: .875rem; margin-top: .25rem; }

.logo-icon {
    width: 56px; height: 56px; margin: 0 auto;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 14px; display: flex; align-items: center; justify-content: center;
}
.logo-icon svg { stroke: #fff; }

.auth-footer { text-align: center; margin-top: 1.5rem; font-size: .75rem; color: var(--text3); }

.alert-box {
    background: var(--red-bg); color: var(--red); border-radius: 8px;
    padding: .75rem 1rem; font-size: .875rem; margin-bottom: 1rem;
    animation: fadeUp .2s ease;
}

/* ─── Form fields ─── */
.field { margin-bottom: 1.25rem; }
.field label {
    display: block; font-size: .8125rem; font-weight: 600;
    color: var(--text2); margin-bottom: .375rem; letter-spacing: .01em;
}
.field input, .field select {
    width: 100%; padding: .75rem 1rem; border: 1.5px solid var(--border);
    border-radius: 8px; font-size: .9375rem; color: var(--text);
    background: #fff; transition: border-color .2s, box-shadow .2s;
    outline: none;
}
.field input:focus, .field select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-ring);
}
.field input::placeholder { color: var(--text3); }

.password-wrap { position: relative; }
.pw-toggle {
    position: absolute; right: .75rem; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; padding: .25rem; color: var(--text3);
}

/* ─── Buttons ─── */
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    width: 100%; padding: .875rem 1.5rem;
    background: var(--primary); color: #fff; border: none; border-radius: 8px;
    font-size: .9375rem; font-weight: 600; cursor: pointer;
    transition: background .2s, transform .15s, box-shadow .2s;
}
.btn-primary:hover { background: var(--primary-hover); box-shadow: var(--shadow-lg); }
.btn-primary:active { transform: scale(.98); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.btn-ghost {
    display: inline-flex; align-items: center; gap: .375rem;
    padding: .5rem .875rem; background: transparent; border: 1.5px solid var(--border);
    border-radius: 8px; font-size: .8125rem; font-weight: 500; color: var(--text);
    cursor: pointer; transition: all .2s;
}
.btn-ghost:hover { border-color: var(--border-hover); background: #f8f9fa; }

.btn-sm { padding: .5rem 1rem; font-size: .8125rem; width: auto; }
.btn-xs { padding: .3rem .625rem; font-size: .75rem; }
.btn-danger { color: var(--red); border-color: transparent; }
.btn-danger:hover { background: var(--red-bg); border-color: transparent; }

.btn-icon {
    background: none; border: none; cursor: pointer; padding: .25rem; color: var(--text3);
    border-radius: 4px; transition: all .15s;
}
.btn-icon:hover { background: var(--blue-bg); color: var(--blue); }
.btn-icon svg { transition: transform .15s; }
.btn-icon.copy-ok {
    background: var(--green-bg);
    color: var(--green);
    animation: copyPulse .45s ease;
}
.btn-icon.copy-ok svg { animation: copyTick .45s ease; }
.btn-icon.copy-fail {
    background: var(--red-bg);
    color: var(--red);
    animation: copyShake .35s ease;
}

.loader {
    width: 18px; height: 18px; border: 2px solid rgba(255,255,255,.3);
    border-top-color: #fff; border-radius: 50%;
    animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes copyPulse {
    0% { transform: scale(1); }
    45% { transform: scale(1.18); }
    100% { transform: scale(1); }
}
@keyframes copyTick {
    0% { transform: rotate(0deg) scale(1); }
    45% { transform: rotate(-12deg) scale(1.12); }
    100% { transform: rotate(0deg) scale(1); }
}
@keyframes copyShake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    50% { transform: translateX(3px); }
    75% { transform: translateX(-2px); }
    100% { transform: translateX(0); }
}

/* ─── Topbar ─── */
.topbar {
    position: sticky; top: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: .75rem 1.5rem;
    background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.topbar-left { display: flex; align-items: center; gap: .75rem; }
.topbar-right { display: flex; align-items: center; gap: .75rem; }
.topbar-title { font-weight: 700; font-size: 1rem; }
.admin-badge {
    font-size: .8125rem; color: var(--text2); background: #f1f3f4;
    padding: .25rem .75rem; border-radius: 20px; font-weight: 500;
}
.back-arrow {
    display: flex; align-items: center; color: var(--text); text-decoration: none;
    padding: .375rem; border-radius: 8px; transition: background .15s;
}
.back-arrow:hover { background: #f1f3f4; }

/* ─── Dashboard layout ─── */
.dash-main { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }

/* Stats row */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
    background: var(--card); border-radius: var(--radius); padding: 1.25rem;
    box-shadow: var(--shadow); display: flex; align-items: center; gap: 1rem;
    transition: box-shadow .2s, transform .15s;
}
.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.stat-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.stat-icon.blue { background: var(--blue-bg); color: var(--blue); }
.stat-icon.blue svg { stroke: var(--blue); }
.stat-icon.green { background: var(--green-bg); color: var(--green); }
.stat-icon.green svg { stroke: var(--green); }
.stat-icon.purple { background: var(--purple-bg); color: var(--purple); }
.stat-icon.purple svg { stroke: var(--purple); }
.stat-icon.amber { background: var(--amber-bg); color: var(--amber); }
.stat-icon.amber svg { stroke: var(--amber); }
.stat-val { font-size: 1.5rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: .75rem; color: var(--text2); margin-top: .25rem; text-transform: uppercase; letter-spacing: .05em; font-weight: 500; }

/* Tabs */
.tab-bar {
    display: flex; gap: .25rem; background: var(--card); border-radius: var(--radius);
    padding: .375rem; box-shadow: var(--shadow); margin-bottom: 1.5rem;
}
.tab {
    flex: 1; padding: .625rem 1rem; border: none; background: transparent;
    border-radius: 8px; font-size: .875rem; font-weight: 500; color: var(--text2);
    cursor: pointer; transition: all .2s;
}
.tab:hover { background: #f1f3f4; }
.tab.active { background: var(--primary); color: #fff; }

.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeUp .25s ease; }

/* Section headers */
.section-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1rem;
}
.section-header h2 { font-size: 1.125rem; font-weight: 600; }
.section-actions { display: flex; gap: .5rem; align-items: center; }

/* Filter row */
.filter-row {
    display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem;
    font-size: .875rem; color: var(--text2);
    flex-wrap: wrap;
}
.filter-row select {
    padding: .5rem .75rem; border: 1.5px solid var(--border); border-radius: 8px;
    font-size: .8125rem; background: #fff; color: var(--text);
    outline: none; cursor: pointer;
}
.filter-row input {
    padding: .5rem .75rem; border: 1.5px solid var(--border); border-radius: 8px;
    font-size: .8125rem; background: #fff; color: var(--text);
    outline: none;
}
.filter-row select:focus, .filter-row input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-ring); }

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}
.chart-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1rem 1rem .75rem;
    min-height: 280px;
    display: flex;
    flex-direction: column;
}
.chart-card h3 {
    font-size: .875rem;
    color: var(--text2);
    margin-bottom: .75rem;
    font-weight: 600;
}
.chart-card canvas {
    width: 100% !important;
    height: 220px !important;
}

/* Tables */
.table-wrap {
    background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
    overflow-x: auto;
}
table { width: 100%; border-collapse: collapse; font-size: .8125rem; }
thead th {
    text-align: left; padding: .75rem 1rem; font-weight: 600; color: var(--text2);
    font-size: .6875rem; text-transform: uppercase; letter-spacing: .06em;
    border-bottom: 1px solid var(--border); white-space: nowrap;
}
tbody td {
    padding: .75rem 1rem; border-bottom: 1px solid #f1f3f4; vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f8f9fa; }
td.num { text-align: center; font-weight: 600; }
td.mono-sm { font-family: "SF Mono", "Fira Code", monospace; font-size: .75rem; color: var(--text2); white-space: nowrap; }
.ua-cell { max-width: 250px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .75rem; color: var(--text3); }

.url-cell { display: flex; align-items: center; gap: .375rem; }
.track-url { font-size: .75rem; word-break: break-all; color: var(--blue); }
.tag-pills { display: flex; flex-wrap: wrap; gap: .25rem; }
.tag-pill {
    display: inline-flex; align-items: center;
    border: 1px solid var(--border); border-radius: 999px;
    padding: .12rem .5rem; font-size: .6875rem;
    color: var(--text2); background: #f8f9fa;
}
.tag-muted { color: var(--text3); }

.empty-state {
    padding: 3rem 1rem; text-align: center; color: var(--text3); font-size: .875rem;
}

/* Badges */
.badge {
    display: inline-block; padding: .2rem .5rem; border-radius: 6px;
    font-size: .6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em;
}
.badge-blue { background: var(--blue-bg); color: var(--blue); }
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-amber { background: var(--amber-bg); color: var(--amber); }
.badge-red { background: var(--red-bg); color: var(--red); }

/* Info card (analytics) */
.info-card {
    background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 1.5rem; margin-bottom: 1.5rem;
}
.info-row { display: flex; padding: .5rem 0; border-bottom: 1px solid #f1f3f4; }
.info-row:last-child { border-bottom: none; }
.info-label { width: 140px; flex-shrink: 0; font-size: .8125rem; font-weight: 600; color: var(--text2); }
.info-val { font-size: .8125rem; color: var(--text); word-break: break-all; }
.info-val code { font-family: "SF Mono", "Fira Code", monospace; font-size: .75rem; color: var(--blue); }

/* Device data modal */
.device-pre {
    background: #1e1e1e; color: #d4d4d4; padding: 1.25rem; border-radius: 8px;
    font-size: .75rem; line-height: 1.6; overflow: auto; max-height: 400px;
    font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
}

/* ─── Modal ─── */
.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.45); z-index: 1000;
    align-items: center; justify-content: center; padding: 1.25rem;
}
.modal-overlay.show { display: flex; animation: fadeIn .2s ease; }
.modal-box {
    background: var(--card); border-radius: 16px; padding: 2rem;
    width: min(100%, 460px); box-shadow: 0 20px 60px rgba(0,0,0,.25);
    animation: scaleIn .25s cubic-bezier(.4,0,.2,1);
}
.modal-box.modal-wide { width: min(100%, 640px); }
.modal-box h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: 1.25rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: .75rem; margin-top: 1.5rem; }
.modal-actions .btn-primary { width: auto; }
.tag-picker {
    border: 1.5px solid var(--border);
    border-radius: 10px;
    padding: .5rem;
    max-height: 170px;
    overflow: auto;
    background: #f8f9fa;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}
.tag-choice {
    margin: 0;
    position: relative;
    display: inline-flex;
    align-items: center;
}
.tag-choice input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.tag-choice span {
    display: inline-flex;
    align-items: center;
    padding: .4rem .75rem;
    border-radius: 999px;
    border: 1.5px solid var(--border);
    background: #fff;
    color: var(--text2);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .01em;
    cursor: pointer;
    transition: all .18s ease;
}
.tag-choice:hover span {
    border-color: #b9c1ca;
    color: var(--text);
}
.tag-choice input:checked + span {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--blue-bg);
    box-shadow: 0 0 0 2px var(--primary-ring);
}
.tag-choice input:focus-visible + span {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-ring);
}
.empty-inline { color: var(--text3); font-size: .8125rem; }
.inline-link-btn {
    border: none;
    background: transparent;
    color: var(--primary);
    padding: 0;
    margin: 0;
    font-size: inherit;
    cursor: pointer;
    text-decoration: underline;
}
.inline-link-btn:hover { color: var(--primary-hover); }

.copy-toast {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 1300;
    background: #1e8e3e;
    color: #fff;
    border-radius: 8px;
    padding: .625rem .85rem;
    font-size: .8125rem;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0,0,0,.18);
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
}
.copy-toast.show {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeUp { from{opacity:0;transform:translateY(12px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
@keyframes scaleIn { from{opacity:0;transform:scale(.95)} to{opacity:1;transform:scale(1)} }

/* ─── Responsive ─── */
@media (max-width: 768px) {
    .topbar { padding: .625rem 1rem; }
    .dash-main { padding: 1rem; }
    .stats-row { grid-template-columns: 1fr 1fr; }
    .tab-bar { overflow-x: auto; }
    .modal-box { padding: 1.5rem; }
}
@media (max-width: 480px) {
    .stats-row { grid-template-columns: 1fr; }
    .section-header { flex-direction: column; gap: .75rem; align-items: flex-start; }
}