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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.1);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === Header === */
header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    padding-bottom: 14px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    white-space: nowrap;
}

.logo svg {
    color: var(--primary);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 14px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    transition: background 0.15s;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nav-link:hover {
    background: var(--bg);
    color: var(--primary);
}

.nav-support {
    background: #f97316;
    color: #fff;
    font-weight: 700;
    margin-left: 6px;
}

.nav-support:hover {
    background: #ea580c;
    color: #fff;
    box-shadow: 0 6px 18px rgba(249, 115, 22, 0.28);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding: 6px 0;
    z-index: 100;
}

.nav-mega {
    min-width: unset;
    width: max-content;
    max-width: 680px;
    padding: 16px 20px;
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px 28px;
}

.nav-dropdown.open .nav-mega {
    display: grid;
}

.nav-dropdown.open .nav-dropdown-menu:not(.nav-mega) {
    display: block;
}

.nav-mega-col {
    min-width: 0;
}

.nav-mega-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 6px 10px 4px;
    margin-bottom: 2px;
}

.nav-mega a {
    display: block;
    padding: 5px 10px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.85rem;
    border-radius: 6px;
    transition: background 0.1s, color 0.1s;
}

.nav-mega a:hover {
    background: var(--bg);
    color: var(--primary);
}

.nav-dropdown-menu:not(.nav-mega) a {
    display: block;
    padding: 8px 18px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.88rem;
    transition: background 0.1s;
}

.nav-dropdown-menu:not(.nav-mega) a:hover {
    background: var(--bg);
    color: var(--primary);
}

.nav-dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border: none;
    background: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
    transition: all 0.2s;
}

.nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* === Main === */
main {
    flex: 1;
    padding: 40px 0 60px;
}

/* === Generator Card === */
.generator-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 36px;
    margin-bottom: 50px;
}

.generator-card h1 {
    font-size: 1.6rem;
    margin-bottom: 6px;
    color: var(--text);
}

.generator-card .subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 28px;
}

/* Password Output */
.password-display {
    display: flex;
    gap: 10px;
    margin-bottom: 28px;
}

#password-output {
    flex: 1;
    font-family: "Cascadia Code", "Fira Code", "JetBrains Mono", "Consolas", monospace;
    font-size: 1.2rem;
    padding: 14px 18px;
    background: #f1f5f9;
    border: 2px solid var(--border);
    border-radius: 8px;
    word-break: break-all;
    min-height: 52px;
    display: flex;
    align-items: center;
    user-select: all;
    transition: border-color 0.2s;
}

#password-output:hover {
    border-color: var(--primary);
}

#password-output.error {
    color: #dc2626;
    font-family: inherit;
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-copy {
    background: #10b981;
    color: #fff;
    min-width: 100px;
}

.btn-copy:hover {
    background: #059669;
}

.btn-copy.copied {
    background: #059669;
}

.btn-copy-small {
    padding: 6px 10px;
    font-size: 0.75rem;
    min-width: unset;
}

/* Options */
.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 32px;
    margin-bottom: 24px;
}

.option-group label {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

/* Length Slider */
.length-control {
    display: flex;
    align-items: center;
    gap: 14px;
}

.length-control input[type="range"] {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 3px;
    outline: none;
}

.length-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.length-control input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

#length-value {
    font-weight: 700;
    font-size: 1.1rem;
    min-width: 30px;
    text-align: center;
    color: var(--primary);
}

/* Checkboxes */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.95rem;
}

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

/* Strength Meter */
.strength-meter {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
}

.strength-bar {
    flex: 1;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    width: 0;
    border-radius: 4px;
    transition: width 0.3s ease, background-color 0.3s ease;
    background: var(--border);
}

.strength-fill.strength-weak {
    background: #ef4444;
}

.strength-fill.strength-fair {
    background: #f59e0b;
}

.strength-fill.strength-strong {
    background: #22c55e;
}

.strength-label {
    font-size: 0.85rem;
    font-weight: 700;
    min-width: 90px;
    text-align: right;
}

.strength-text-weak {
    color: #ef4444;
}

.strength-text-fair {
    color: #d97706;
}

.strength-text-strong {
    color: #16a34a;
}

/* Action Row */
.action-row {
    display: flex;
    gap: 12px;
    margin: 20px 0;
}

/* Tool Pages */
.tool-area {
    margin-bottom: 16px;
}

.tool-area label {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

.tool-textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-family: "Cascadia Code", "Fira Code", "JetBrains Mono", "Consolas", monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    resize: vertical;
    background: #f1f5f9;
    color: var(--text);
    transition: border-color 0.2s;
}

.tool-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.tool-textarea[readonly] {
    cursor: pointer;
    background: #f8fafc;
}

.result-display {
    font-family: "Cascadia Code", "Fira Code", "JetBrains Mono", "Consolas", monospace;
    font-size: 1.05rem;
    padding: 14px 18px;
    background: #f1f5f9;
    border: 2px solid var(--border);
    border-radius: 8px;
    word-break: break-all;
    min-height: 52px;
    display: flex;
    align-items: center;
    user-select: all;
    cursor: pointer;
}

.result-display:hover {
    border-color: var(--primary);
}

.result-display-large {
    font-size: 1.8rem;
    font-weight: 700;
    justify-content: center;
    padding: 24px;
    color: var(--primary);
}

.tool-options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.tool-swap {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.tool-swap a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.tool-swap a:hover {
    text-decoration: underline;
}

.tool-copy-row {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

/* === Popular Passwords Table === */
.password-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
}

.password-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
    font-size: 0.85rem;
}

.password-table th,
.password-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.password-table th {
    background: #f8fafc;
    font-weight: 700;
    color: var(--text);
    position: sticky;
    top: 0;
    z-index: 1;
}

.password-table tr:nth-child(even) td {
    background: #fcfdff;
}

.password-table .rank {
    width: 60px;
    color: var(--text);
    font-weight: 700;
}

.value-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.value-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    word-break: break-all;
}

.value-main code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 6px;
    font-weight: 600;
}

.value-hash {
    font-size: 0.78rem;
    color: #475569;
}

.hash-label {
    font-weight: 700;
    color: #1f2937;
    min-width: 54px;
}

.hash-value {
    font-family: "Cascadia Code", "Fira Code", "JetBrains Mono", "Consolas", monospace;
    max-width: 420px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    text-decoration: none;
    font-size: 0.85rem;
    min-width: 36px;
}

.page-link:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.page-link.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    pointer-events: none;
}

.page-link.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.tool-input-small {
    padding: 10px 14px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    width: 120px;
    background: #f1f5f9;
    color: var(--text);
}

.tool-input-small:focus {
    outline: none;
    border-color: var(--primary);
}

/* === SEO Content === */
.content-section {
    max-width: 800px;
}

.content-section h2 {
    font-size: 1.45rem;
    margin: 48px 0 16px;
    color: var(--text);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.content-section h2:first-of-type {
    margin-top: 0;
}

.content-section h3 {
    font-size: 1.15rem;
    margin: 28px 0 10px;
    color: var(--text);
}

.content-section p {
    margin-bottom: 16px;
    color: #334155;
}

.content-section ul,
.content-section ol {
    margin: 0 0 16px 24px;
    color: #334155;
}

.content-section li {
    margin-bottom: 8px;
}

.content-section strong {
    color: var(--text);
}

.highlight-box {
    background: #eff6ff;
    border-left: 4px solid var(--primary);
    padding: 18px 22px;
    border-radius: 0 8px 8px 0;
    margin: 24px 0;
}

.highlight-box p {
    margin: 0;
}

.warning-box {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 18px 22px;
    border-radius: 0 8px 8px 0;
    margin: 24px 0;
}

.warning-box p {
    margin: 0;
}

.faq-item {
    margin-bottom: 24px;
}

.faq-item h3 {
    margin-top: 0;
    color: var(--primary-dark);
}

/* === Stats Grid (Character Counter) === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
}

.stat-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === Tool Table (URL Parser) === */
.tool-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.tool-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

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

.tool-table td:first-child {
    width: 120px;
    background: var(--bg);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.tool-table td:last-child {
    word-break: break-all;
    font-family: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
}

/* === Footer === */
.site-footer {
    margin-top: auto;
    background: linear-gradient(180deg, rgba(248,250,252,0.7) 0%, rgba(226,232,240,0.65) 100%);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}

.site-footer .container {
    max-width: 1100px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(4, 1fr);
    gap: 24px 20px;
    padding: 30px 20px 18px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-logo {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.2px;
}

.footer-brand p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.footer-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text);
    margin-bottom: 8px;
}

.footer-col {
    display: flex;
    flex-direction: column;
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 4px 0;
    transition: color 0.15s ease;
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-meta {
    padding: 8px 20px 24px;
    font-size: 0.85rem;
    text-align: left;
    color: var(--text-muted);
}

.footer-meta p {
    margin: 0 0 6px;
}

.footer-meta p:last-child {
    margin-bottom: 0;
}

.footer-meta a {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px dashed rgba(30, 41, 59, 0.3);
    transition: color 0.15s ease, border-color 0.15s ease;
}

.footer-meta a:hover {
    color: var(--primary);
    border-color: rgba(37, 99, 235, 0.5);
}

/* === Responsive === */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 12px 20px 16px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        z-index: 99;
    }

    .nav.open {
        display: flex;
    }

    .nav-link {
        padding: 10px 0;
        width: 100%;
    }

    .nav-support {
        width: auto;
        align-self: flex-start;
        padding: 10px 16px;
        margin-top: 6px;
    }

    .nav-dropdown-menu,
    .nav-mega {
        position: static;
        box-shadow: none;
        border: none;
        padding: 0 0 0 16px;
        min-width: unset;
        max-width: unset;
        width: 100%;
    }

    .nav-mega {
        grid-template-columns: 1fr 1fr;
        gap: 8px 16px;
    }

    .nav-dropdown.open .nav-mega {
        display: grid;
    }

    .nav-dropdown-menu:not(.nav-mega) a,
    .nav-mega a {
        padding: 6px 0;
    }

    .header-inner {
        position: relative;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        padding: 26px 20px 14px;
    }
}

@media (max-width: 600px) {
    main {
        padding: 20px 0 40px;
    }

    .generator-card {
        padding: 20px 16px;
        border-radius: 8px;
        margin-bottom: 32px;
    }

    .generator-card h1 {
        font-size: 1.3rem;
    }

    .generator-card .subtitle {
        font-size: 0.85rem;
        margin-bottom: 20px;
    }

    .password-display {
        flex-direction: row;
        gap: 8px;
        margin-bottom: 20px;
    }

    #password-output {
        font-size: 0.9rem;
        padding: 12px 12px;
        min-height: 48px;
    }

    .btn-copy {
        min-width: unset;
    }

    .password-display .btn {
        width: auto;
        padding: 10px 14px;
    }

    .password-table .btn {
        width: auto;
    }

    .options-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 16px;
    }

    .strength-meter {
        margin-bottom: 16px;
    }

    .strength-label {
        min-width: 75px;
        font-size: 0.8rem;
    }

    .action-row {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        padding: 14px 20px;
    }

    .tool-textarea {
        font-size: 0.85rem;
    }

    .result-display {
        font-size: 0.9rem;
    }

    .result-display-large {
        font-size: 1.3rem;
        padding: 18px;
    }

    .tool-options {
        flex-direction: column;
        gap: 10px;
    }

    .content-section h2 {
        font-size: 1.2rem;
        margin: 32px 0 12px;
    }

    .content-section h3 {
        font-size: 1.05rem;
    }

    .highlight-box,
    .warning-box {
        padding: 14px 16px;
    }

    .hash-value {
        max-width: 220px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}