/* ============================================================
   NTM Smart Label - Master Stylesheet
   Landing Page + Admin Dashboard
   ============================================================ */

/* ---- 1. Reset & Base ---- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Brand colors - professional B2B palette */
    --primary: #0F172A;        /* Dark navy - trust, premium */
    --primary-light: #1E293B;
    --accent: #F97316;         /* Orange - NTM Printing energy */
    --accent-hover: #EA580C;
    --accent-light: #FFF7ED;

    /* Neutrals */
    --bg: #FAFAF9;
    --surface: #FFFFFF;
    --border: #E5E7EB;
    --border-light: #F3F4F6;

    /* Text */
    --text: #0F172A;
    --text-muted: #64748B;
    --text-light: #94A3B8;

    /* Status */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;

    /* Layout */
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
}

button {
    font-family: inherit;
    cursor: pointer;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--border-light);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary);
}

/* ============================================================
   2. LANDING PAGE
   ============================================================ */

body.landing {
    background: var(--surface);
}

/* ---- Top Navigation ---- */
.topnav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.topnav strong {
    font-size: 20px;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.topnav a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
}

.topnav a:hover {
    color: var(--accent);
}

/* ---- Hero Section ---- */
.hero {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero .topnav strong,
.hero .topnav a {
    color: #fff;
}

.hero .topnav a:hover {
    color: var(--accent);
}

.hero-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 5% 120px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(28px, 5vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero .lead {
    font-size: clamp(16px, 2vw, 20px);
    color: #cbd5e1;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero .lead strong {
    color: var(--accent);
    font-weight: 600;
}

/* ---- Buttons ---- */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 16px 36px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 16px;
    border: none;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(249, 115, 22, 0.4);
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(249, 115, 22, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--primary);
    padding: 14px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    border: 2px solid var(--border);
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ---- Benefits Section ---- */
.benefits {
    padding: 100px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.benefits h2,
.usecases h2,
.cta h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.02em;
    color: var(--primary);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.grid-3 > div {
    background: var(--surface);
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.grid-3 > div:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.grid-3 h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}

.grid-3 p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
}

/* ---- Use Cases Section ---- */
.usecases {
    background: var(--bg);
    padding: 100px 5%;
}

.usecases > * {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.usecases ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    list-style: none;
}

.usecases li {
    background: var(--surface);
    padding: 20px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-weight: 500;
    text-align: center;
    transition: all 0.2s ease;
    position: relative;
    padding-left: 48px;
}

.usecases li::before {
    content: '✓';
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-weight: 700;
    font-size: 18px;
}

.usecases li:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

/* ---- CTA Section ---- */
.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    padding: 80px 5%;
    text-align: center;
}

.cta h2 {
    color: #fff;
    margin-bottom: 16px;
}

.cta p {
    color: #cbd5e1;
    margin-bottom: 32px;
    font-size: 18px;
}

/* ---- Footer ---- */
footer {
    background: var(--primary);
    color: #94A3B8;
    padding: 32px 5%;
    text-align: center;
    font-size: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ============================================================
   3. ADMIN LOGIN
   ============================================================ */

body.admin-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 20px;
}

.login-box {
    background: var(--surface);
    padding: 48px 40px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-box h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.login-box h2 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.login-box form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login-box label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.login-box input[type="text"],
.login-box input[type="password"] {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--surface);
}

.login-box input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.login-box button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 14px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
}

.login-box button:hover {
    background: var(--accent);
}

.login-box .error {
    background: #FEF2F2;
    color: var(--danger);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    border-left: 3px solid var(--danger);
    margin-bottom: 8px;
}

.login-box .success {
    background: #F0FDF4;
    color: var(--success);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    border-left: 3px solid var(--success);
}

/* ============================================================
   4. ADMIN DASHBOARD
   ============================================================ */

body.admin {
    background: var(--bg);
    min-height: 100vh;
}

/* ---- Admin Header ---- */
.admin-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.admin-header h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.01em;
}

.admin-header nav {
    font-size: 14px;
    color: var(--text-muted);
}

.admin-header nav a {
    color: var(--accent);
    font-weight: 500;
    margin-left: 4px;
}

/* ---- Stats Cards ---- */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 32px;
    max-width: 1400px;
    margin: 0 auto;
}

.stat-card {
    background: var(--surface);
    padding: 28px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
}

.stat-card.warn::before {
    background: var(--warning);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-card h3 {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -0.03em;
}

.stat-card.warn h3 {
    color: var(--warning);
}

.stat-card p {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

/* ---- Search Bar ---- */
.search-bar {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px 24px;
    display: flex;
    gap: 12px;
}

.search-bar input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--surface);
    transition: all 0.2s ease;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.search-bar button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    transition: background 0.2s ease;
}

.search-bar button:hover {
    background: var(--accent);
}

/* ---- QR Table ---- */
.qr-table {
    width: calc(100% - 64px);
    max-width: 1400px;
    margin: 0 auto 32px;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.qr-table thead {
    background: var(--bg);
}

.qr-table th {
    text-align: left;
    padding: 14px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
}

.qr-table td {
    padding: 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text);
    vertical-align: middle;
}

.qr-table tbody tr {
    transition: background 0.15s ease;
}

.qr-table tbody tr:hover {
    background: var(--bg);
}

.qr-table tbody tr:last-child td {
    border-bottom: none;
}

.qr-table code {
    background: var(--accent-light);
    color: var(--accent-hover);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.qr-table .url-cell a {
    color: var(--info);
    font-size: 13px;
    word-break: break-all;
}

.qr-table tr.row-warn {
    background: #FFFBEB;
}

.qr-table tr.row-warn:hover {
    background: #FEF3C7;
}

.qr-table td a {
    font-weight: 500;
    font-size: 13px;
}

/* ---- Form Box (edit page) ---- */
.form-box {
    max-width: 700px;
    margin: 32px auto;
    padding: 40px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.form-box h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    letter-spacing: -0.02em;
}

.form-box form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-box label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.form-box label.checkbox {
    flex-direction: row;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.form-box input[type="text"],
.form-box input[type="url"],
.form-box select,
.form-box textarea {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    background: var(--surface);
    transition: all 0.2s ease;
    color: var(--text);
}

.form-box input:focus,
.form-box select:focus,
.form-box textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-box input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
    cursor: pointer;
}

.form-box button[type="submit"] {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    align-self: flex-start;
    margin-top: 8px;
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

.form-box button[type="submit"]:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

.form-box .error {
    background: #FEF2F2;
    color: var(--danger);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    border-left: 3px solid var(--danger);
}

.form-box .success {
    background: #F0FDF4;
    color: var(--success);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    border-left: 3px solid var(--success);
}

/* ---- Logs page extras ---- */
body.admin > p {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px 16px;
    color: var(--text-muted);
    font-size: 14px;
}

body.admin > p strong {
    color: var(--primary);
}

/* ============================================================
   5. RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
    .hero-inner {
        padding: 60px 5% 80px;
    }

    .benefits,
    .usecases {
        padding: 60px 5%;
    }

    .admin-header {
        padding: 16px 20px;
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-header h1 {
        font-size: 18px;
    }

    .stats,
    .search-bar {
        padding-left: 20px;
        padding-right: 20px;
    }

    .qr-table {
        width: calc(100% - 40px);
        font-size: 13px;
    }

    .qr-table th,
    .qr-table td {
        padding: 10px 8px;
    }

    /* Hide less critical columns on mobile */
    .qr-table th:nth-child(2),
    .qr-table td:nth-child(2),
    .qr-table th:nth-child(6),
    .qr-table td:nth-child(6) {
        display: none;
    }

    .form-box {
        margin: 20px;
        padding: 24px 20px;
    }

    .login-box {
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 26px;
    }

    .hero .lead {
        font-size: 15px;
    }

    .btn-primary {
        padding: 14px 28px;
        font-size: 15px;
    }

    .stat-card h3 {
        font-size: 28px;
    }
}

/* ============================================================
   6. UTILITIES & PRINT
   ============================================================ */

.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

@media print {
    .admin-header,
    .search-bar,
    .btn-primary,
    .btn-secondary {
        display: none !important;
    }

    body {
        background: #fff;
    }

    .qr-table {
        box-shadow: none;
        border: 1px solid #000;
    }
}