/* ============================================
   Tech Tools — Design System
   Family-owned independent tool truck
   Colors: Green #3DD600, Black, Dark grays
   ============================================ */

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

:root {
    --green: #3DD600;
    --green-dark: #2ba800;
    --green-glow: rgba(61, 214, 0, 0.25);
    --green-faint: rgba(61, 214, 0, 0.08);
    --bg-primary: #0a0a0a;
    --bg-card: #141414;
    --bg-card-hover: #1a1a1a;
    --bg-input: #1a1a1a;
    --bg-surface: #111111;
    --border: #2a2a2a;
    --border-focus: #3DD600;
    --text-primary: #f0f0f0;
    --text-secondary: #999;
    --text-muted: #666;
    --danger: #ff4444;
    --danger-bg: rgba(255, 68, 68, 0.1);
    --success: #3DD600;
    --success-bg: rgba(61, 214, 0, 0.1);
    --warning: #ffaa00;
    --warning-bg: rgba(255, 170, 0, 0.1);
    --radius: 10px;
    --radius-lg: 16px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(61, 214, 0, 0.15);
    --transition: 0.25s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--green);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--green-dark);
}

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.15rem; }

.text-green { color: var(--green); }
.text-muted { color: var(--text-secondary); }
.text-center { text-align: center; }

/* ---------- Utility ---------- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.navbar-brand img {
    width: 36px;
    height: 36px;
    border-radius: 6px;
}

.navbar-brand span {
    color: var(--green);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
    padding: 6px 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--green);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--green);
    color: #000 !important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all var(--transition);
}

.nav-cta:hover {
    background: var(--green-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
}

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
    }
    .nav-links.open {
        transform: translateY(0);
    }
    .nav-links a {
        font-size: 1rem;
        padding: 10px 0;
    }
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--green);
    color: #000;
}

.btn-primary:hover {
    background: var(--green-dark);
    color: #000;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-outline {
    background: transparent;
    color: var(--green);
    border: 2px solid var(--green);
}

.btn-outline:hover {
    background: var(--green-faint);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--green);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ---------- Hero Section ---------- */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 60px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.25;
    filter: blur(2px);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
        rgba(10,10,10,0.3) 0%,
        rgba(10,10,10,0.7) 50%,
        var(--bg-primary) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 80px 20px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--green-faint);
    border: 1px solid rgba(61, 214, 0, 0.2);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--green);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero h1 span {
    color: var(--green);
    text-shadow: 0 0 40px rgba(61, 214, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Brand Cards ---------- */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.brand-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--green);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.brand-card:hover {
    border-color: var(--green);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.brand-card:hover::before {
    transform: scaleX(1);
}

.brand-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.brand-card h3 {
    margin-bottom: 8px;
}

.brand-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ---------- About Section ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.about-content {
    padding: 20px 0;
}

.about-content h2 {
    margin-bottom: 16px;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-features {
    list-style: none;
    margin-top: 24px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.about-features li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: var(--green);
    color: #000;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ---------- Services Section ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.service-card:hover {
    border-color: var(--green);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    color: inherit;
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--green-faint);
    border-radius: 12px;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.service-card h3 {
    margin-bottom: 8px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ---------- Cards (General) ---------- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
}

.card:hover {
    border-color: rgba(61, 214, 0, 0.3);
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 3px var(--green-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

/* Password visibility toggle */
.password-wrap {
    position: relative;
}
.password-wrap .form-input {
    padding-right: 44px;
}
.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--text-muted);
    opacity: 0.7;
    transition: opacity var(--transition), color var(--transition);
}
.password-toggle:hover {
    opacity: 1;
    color: var(--green);
}
.password-toggle svg {
    display: block;
    width: 20px;
    height: 20px;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 520px) {
    .form-row { grid-template-columns: 1fr; }
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 4px;
}

/* ---------- File Upload Zone ---------- */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--green);
    background: var(--green-faint);
}

.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-zone-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.upload-zone-text {
    font-weight: 600;
    color: var(--green);
    margin-bottom: 4px;
}

.upload-zone-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.upload-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.upload-preview-item {
    position: relative;
    width: 64px;
    height: 64px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.upload-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.upload-preview-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    background: var(--danger);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 0.65rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* ---------- Alerts / Toasts ---------- */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(61, 214, 0, 0.2);
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(255, 68, 68, 0.2);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid rgba(255, 170, 0, 0.2);
}

/* ---------- Dashboard ---------- */
.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.dashboard-welcome h1 {
    font-size: 1.75rem;
    margin-bottom: 4px;
}

.dashboard-welcome p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 40px;
}

.action-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    color: inherit;
    display: block;
}

.action-card:hover {
    border-color: var(--green);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
    color: inherit;
}

.action-card-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.action-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.action-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ---------- Request History Table ---------- */
.table-wrap {
    overflow-x: auto;
    margin-top: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table th {
    background: var(--bg-surface);
    text-align: left;
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.table td {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    vertical-align: middle;
}

.table tbody tr {
    transition: background var(--transition);
}

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

/* Status badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.status-new {
    background: var(--green-faint);
    color: var(--green);
}

.status-in-progress {
    background: var(--warning-bg);
    color: var(--warning);
}

.status-ordered {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.status-closed {
    background: rgba(156, 163, 175, 0.1);
    color: #9ca3af;
}

/* ---------- Auth Pages ---------- */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    padding-top: 80px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-header img {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    margin: 0 auto 14px;
}

.auth-header h1 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-toggle {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-toggle a {
    font-weight: 600;
}

/* ---------- Page Header ---------- */
.page-header {
    padding: 100px 0 40px;
    text-align: center;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* ---------- Page Content ---------- */
.page-content {
    padding: 40px 0 80px;
}

/* ---------- Footer ---------- */
.footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
    text-align: center;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-brand img {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.footer-brand span {
    color: var(--green);
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-links {
    display: flex;
    gap: 20px;
    list-style: none;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--green);
}

@media (max-width: 600px) {
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 20px;
}

/* ---------- Loading Spinner ---------- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0,0,0,0.2);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-light {
    border-color: rgba(255,255,255,0.2);
    border-top-color: #fff;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease both;
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

/* ---------- Section Headers ---------- */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 40px;
}

.section-header h2 {
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--green);
    margin-bottom: 12px;
}

/* ---------- Divider ---------- */
.divider {
    width: 60px;
    height: 3px;
    background: var(--green);
    border-radius: 2px;
    margin: 16px auto;
}