/* Secret.Broker Design System */

:root {
    /* Colors */
    --color-bg: #f8f9fa; /* Off white / light grey-blue hint */
    --color-text-primary: #1a1a1a; /* Near black */
    --color-text-secondary: #4a4a4a; /* Softer dark grey */
    --color-accent-primary: #0052cc; /* Deep blue */
    --color-accent-primary-hover: #003d99;
    --color-accent-fun: #20c997; /* Fresh mint/teal */
    --color-status-success: #28a745;
    --color-status-warning: #ffc107;
    --color-status-danger: #dc3545;
    --color-white: #ffffff;
    --color-border: #e0e0e0;

    /* Typography */
    --font-family-primary: 'Inter', 'Space Grotesk', system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-family-mono: 'ui-monospace', 'SFMono-Regular', 'SF Mono', 'Menlo', 'Consolas', 'Liberation Mono', monospace;

    /* Spacing */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-10: 40px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;
    --spacing-24: 96px;

    /* Layout */
    --max-width: 1120px;
    --header-height: 72px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
}

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

body {
    margin: 0;
    font-family: var(--font-family-primary);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: var(--spacing-4);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; } /* 40px */
h2 { font-size: 2rem; } /* 32px */
h3 { font-size: 1.25rem; } /* 20px */

p {
    margin-top: 0;
    margin-bottom: var(--spacing-4);
}

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

a:hover {
    text-decoration: underline;
    color: var(--color-accent-primary-hover);
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: var(--spacing-6);
    padding-right: var(--spacing-6);
}

@media (min-width: 1024px) {
    .container {
        padding-left: var(--spacing-20);
        padding-right: var(--spacing-20);
    }
}

.section {
    padding-top: var(--spacing-10);
    padding-bottom: var(--spacing-10);
}

@media (min-width: 768px) {
    .section {
        padding-top: var(--spacing-16);
        padding-bottom: var(--spacing-16);
    }
}

@media (min-width: 1024px) {
    .section {
        padding-top: var(--spacing-24);
        padding-bottom: var(--spacing-24);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-size: 1rem;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-primary-hover);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

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

.btn-secondary:hover {
    background-color: rgba(0,0,0,0.05);
    text-decoration: none;
}

.btn-full-mobile {
    width: 100%;
}

@media (min-width: 640px) {
    .btn-full-mobile {
        width: auto;
    }
}

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

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo:hover {
    text-decoration: none;
    color: var(--color-text-primary);
}

.nav-links {
    display: none;
    gap: var(--spacing-6);
    align-items: center;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--color-accent-primary);
    text-decoration: none;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-2);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Hero */
.hero {
    text-align: center;
    padding-top: var(--spacing-12);
    padding-bottom: var(--spacing-12);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
}

.hero-sub {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-8);
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-6);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border: 1px solid var(--color-border);
}

/* Secret Card (Hero) */
.secret-card {
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
}

.secret-input {
    width: 100%;
    min-height: 140px;
    padding: var(--spacing-4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-family-primary);
    font-size: 1rem;
    resize: vertical;
    margin-bottom: var(--spacing-4);
}

.secret-input:focus {
    outline: 2px solid var(--color-accent-fun);
    border-color: var(--color-accent-fun);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    text-align: center;
    padding: var(--spacing-6);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-4);
    color: var(--color-accent-primary);
}

/* Security Section */
.security-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

@media (min-width: 1024px) {
    .security-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* FAQ */
.faq-item {
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-4) 0;
}

.faq-question {
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    padding: 0;
}

.faq-answer {
    margin-top: var(--spacing-2);
    color: var(--color-text-secondary);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* Footer */
.site-footer {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-8) 0;
    margin-top: var(--spacing-12);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-links {
    display: flex;
    gap: var(--spacing-4);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* Utilities */
.text-center { text-align: center; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mt-4 { margin-top: var(--spacing-4); }
.text-muted { color: var(--color-text-secondary); }

/* Vue App Specifics (if needed to override) */
#app {
    width: 100%;
}