/* DNSFiles - Main Stylesheet */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #64748b;
    --color-accent: #0ea5e9;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-success: #10b981;
    --color-error: #ef4444;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 8px;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.main-nav a {
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: var(--color-primary);
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-family: var(--font-sans);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
}

.btn-large {
    padding: 14px 28px;
    font-size: 18px;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--color-text);
}

.lead {
    font-size: 20px;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Features Section */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--color-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    color: white;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.cta-content p {
    color: var(--color-text-light);
    font-size: 18px;
    margin-bottom: 32px;
}

/* Forms */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-text);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-help {
    font-size: 14px;
    color: var(--color-text-light);
    margin-top: 4px;
}

.form-error {
    color: var(--color-error);
    font-size: 14px;
    margin-top: 4px;
}

/* Dashboard Styles */
.dashboard {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

.dashboard-header {
    margin-bottom: 32px;
}

.dashboard-header h1 {
    font-size: 32px;
    margin-bottom: 8px;
}

.dashboard-header p {
    color: var(--color-text-light);
}

.file-list {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    transition: background 0.2s;
}

.file-item:last-child {
    border-bottom: none;
}

.file-item:hover {
    background: var(--color-bg-alt);
}

.file-icon {
    width: 40px;
    height: 40px;
    margin-right: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    color: var(--color-primary);
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 500;
    margin-bottom: 4px;
}

.file-meta {
    font-size: 14px;
    color: var(--color-text-light);
}

.file-actions {
    display: flex;
    gap: 12px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
}

/* Auth Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    padding: 40px 20px;
}

.auth-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 48px;
    max-width: 440px;
    width: 100%;
    box-shadow: var(--shadow-lg);
}

.auth-card .logo {
    justify-content: center;
    margin-bottom: 32px;
    font-size: 24px;
}

.auth-card h1 {
    font-size: 28px;
    margin-bottom: 8px;
    text-align: center;
}

.auth-card p {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

/* Content Pages */
.content-page {
    padding: 60px 0;
}

.content-page h1 {
    font-size: 40px;
    margin-bottom: 16px;
}

.content-page h2 {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 16px;
}

.content-page h3 {
    font-size: 22px;
    margin-top: 32px;
    margin-bottom: 12px;
}

.content-page p {
    margin-bottom: 16px;
    line-height: 1.8;
    color: var(--color-text-light);
}

.content-page ul, .content-page ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.content-page li {
    margin-bottom: 8px;
    line-height: 1.8;
    color: var(--color-text-light);
}

.page-header {
    padding: 60px 0 40px;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    font-size: 40px;
}

.page-header p {
    font-size: 18px;
    color: var(--color-text-light);
    margin-top: 12px;
}

/* Footer */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 60px 0 20px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--color-text-light);
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--color-text);
}

.footer-column a {
    display: block;
    color: var(--color-text-light);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-light);
    font-size: 14px;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    border: 1px solid;
}

.alert-success {
    background: #d1fae5;
    border-color: var(--color-success);
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    border-color: var(--color-error);
    color: #991b1b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }

    .lead {
        font-size: 18px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .main-nav {
        gap: 12px;
        font-size: 14px;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .auth-card {
        padding: 32px 24px;
    }

    .file-item {
        flex-wrap: wrap;
    }

    .file-actions {
        width: 100%;
        margin-top: 12px;
        justify-content: flex-end;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .btn-large {
        padding: 12px 20px;
        font-size: 16px;
    }
}