/* 
 * Obliga Site V1 Styles
 * Direction: Paper + Ink + Ledger-Accent (Sober, High-Trust)
 */

:root {
    /* Colour Tokens */
    --bg-canvas: #f4f1ea;
    --bg-paper: #fffdf8;
    --bg-ink: #15202b;
    --text-strong: #15202b;
    --text-body: #334155;
    --text-muted: #5f6877;
    --line-soft: #d8d1c6;
    --line-strong: #9aa4b2;
    --accent-primary: #2f6b57;
    --accent-primary-hover: #245545;
    --accent-warm: #b8742a;
    --accent-alert: #a34d3f;
    --surface-card: rgba(255, 253, 248, 0.88);
    --shadow-soft: 0 16px 40px rgba(21, 32, 43, 0.08);

    /* Typography Tokens */
    --font-headings: 'Newsreader', Georgia, serif;
    --font-body: 'IBM Plex Sans', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;

    /* Layout Tokens */
    --container-width: 1200px;
    --reading-width: 680px;
    --border-radius: 4px;
    --transition: all 0.2s ease;

    /* Spacing Scale */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-12: 3rem;     /* 48px */
    --space-18: 4.5rem;   /* 72px */
    --space-24: 6rem;     /* 96px */
}

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-body);
    background-color: var(--bg-canvas);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-6);
    }
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-headings);
    color: var(--bg-ink);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.8rem, 6vw, 5.2rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 600; text-align: center; margin-bottom: var(--space-12); }
h3 { font-size: 1.35rem; font-weight: 600; }

p { margin-bottom: var(--space-4); max-width: var(--reading-width); }

/* Accessibility: Focus States */
a:focus-visible, 
button:focus-visible, 
input:focus-visible, 
select:focus-visible, 
textarea:focus-visible {
    outline: 3px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--bg-ink);
    text-decoration: underline;
}

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

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

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

/* Header & Nav */
header {
    background-color: rgba(244, 241, 234, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line-soft);
    padding: var(--space-4) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-headings);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-ink);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--bg-ink);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--bg-ink);
}

/* Hero Section */
.hero {
    padding: var(--space-24) 0;
    text-align: center;
}

@media (min-width: 768px) {
    .hero {
        padding: calc(var(--space-24) + var(--space-4)) 0;
    }
}

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

.subheadline {
    font-size: 1.25rem;
    color: var(--text-body);
    margin-bottom: 2.5rem;
}

.hero-ctas {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-8);
}

.reassurance {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
}

.meta-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Problem Section */
.problem {
    padding: var(--space-12) 0;
    background-color: var(--bg-paper);
    border-top: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
}

@media (min-width: 768px) {
    .problem {
        padding: var(--space-18) 0;
    }
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

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

.problem-card {
    background: var(--surface-card);
    padding: var(--space-8);
    border-radius: var(--border-radius);
    border: 1px solid var(--line-soft);
    transition: var(--transition);
}

.problem-card:hover,
.problem-card:focus-within {
    box-shadow: var(--shadow-soft);
}

/* Workflow Section */
.workflow {
    padding: var(--space-12) 0;
}

@media (min-width: 768px) {
    .workflow {
        padding: var(--space-18) 0;
    }
}

.workflow-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .workflow-steps {
        grid-template-columns: repeat(5, 1fr);
    }
}

.step {
    position: relative;
    padding: var(--space-4);
}

.step-number {
    width: 32px;
    height: 32px;
    background-color: var(--bg-ink);
    color: var(--bg-paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: var(--space-4);
}

/* Product Section */
.product {
    padding: var(--space-12) 0;
    background-color: var(--bg-paper);
    border-top: 1px solid var(--line-soft);
}

@media (min-width: 768px) {
    .product {
        padding: var(--space-18) 0;
    }
}

.product-comparison {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .product-comparison {
        grid-template-columns: 1fr 1fr;
    }
}

.product-box {
    padding: var(--space-8);
    border-radius: var(--border-radius);
    border: 1px solid var(--line-soft);
    background: var(--bg-canvas);
    transition: var(--transition);
}

.product-box:hover,
.product-box:focus-within {
    box-shadow: var(--shadow-soft);
}

.product-box.include h3 { color: var(--accent-primary); }
.product-box.exclude h3 { color: var(--accent-alert); }

.product-box ul {
    list-style: none;
    margin-top: var(--space-4);
}

.product-box li {
    margin-bottom: var(--space-2);
    padding-left: var(--space-6);
    position: relative;
}

.product-box li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}

.icon-check {
    flex-shrink: 0;
    color: var(--accent-primary);
    margin-top: 0.25rem;
}

.icon-cross {
    flex-shrink: 0;
    color: var(--accent-alert);
    margin-top: 0.25rem;
}

/* Legacy bullet fallback (when no icon SVG is present) */
.product-box li:not(:has(svg))::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.product-note {
    text-align: center;
    font-style: italic;
    color: var(--text-muted);
}

/* Trust Section */
.trust {
    padding: var(--space-12) 0;
}

@media (min-width: 768px) {
    .trust {
        padding: var(--space-18) 0;
    }
}

.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.trust-item {
    padding: var(--space-6);
    border-left: 4px solid var(--accent-primary);
    background: var(--bg-paper);
    border-right: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
    transition: var(--transition);
}

.trust-item:hover,
.trust-item:focus-within {
    box-shadow: var(--shadow-soft);
}

.trust-links {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
}

.trust-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
}

/* Badges and Eyebrows */
.badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
    background-color: var(--bg-ink);
    color: var(--bg-paper);
    margin-bottom: var(--space-4);
}

.badge-accent {
    background-color: var(--accent-primary);
    color: var(--bg-paper);
}

.badge-warm {
    background-color: var(--accent-warm);
    color: var(--bg-paper);
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent-warm);
    margin-bottom: var(--space-2);
}

/* CTA Section */
.cta-section {
    padding: var(--space-12) 0;
    background-color: var(--bg-ink);
    color: var(--bg-paper);
}

@media (min-width: 768px) {
    .cta-section {
        padding: var(--space-18) 0;
    }
}

.cta-section h2, .cta-section p {
    color: var(--bg-paper);
    text-align: center;
}

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

.access-form {
    background: var(--bg-paper);
    color: var(--text-body);
    padding: var(--space-8);
    border-radius: var(--border-radius);
    margin-top: var(--space-8);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-strong);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--line-strong);
    border-radius: var(--border-radius);
    font-family: inherit;
    background-color: var(--bg-paper);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    font-size: 0.875rem;
}

.alt-contact {
    text-align: center;
    margin-top: var(--space-6);
    color: var(--bg-paper);
}

.alt-contact a {
    color: var(--bg-paper);
    font-weight: 600;
}

/* Footer */
footer {
    padding: var(--space-8) 0;
    border-top: 1px solid var(--line-soft);
    background-color: var(--bg-canvas);
}

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

.footer-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-note {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-8);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-12 {
    grid-template-columns: repeat(12, 1fr);
}

@media (min-width: 768px) {
    .grid-md-8 {
        grid-template-columns: repeat(8, 1fr);
    }

    .grid-md-6 {
        grid-template-columns: repeat(6, 1fr);
    }

    .grid-md-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .grid-md-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-md-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Content Pages */
.content-page {
    padding: var(--space-12) 0;
    max-width: 800px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .content-page {
        padding: var(--space-18) 0;
    }
}

.content-page h1 { text-align: center; }
.content-page h2 { text-align: left; margin-top: var(--space-8); }

/* Error/Thanks Pages */
.thanks-content, .error-content {
    text-align: center;
    padding: var(--space-18) 0;
}

.thanks-actions {
    margin-top: var(--space-8);
}

.hidden { display: none; }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--bg-paper);
        padding: var(--space-4) 0;
        border-bottom: 1px solid var(--line-soft);
        text-align: center;
        z-index: 99;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

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

    .footer-content {
        align-items: flex-start;
        flex-direction: column;
        gap: var(--space-4);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-2);
    }
}

@media (max-width: 375px) {
    .container {
        padding: 0 var(--space-4);
    }

    h1 { font-size: 2rem !important; }
    h2 { font-size: 1.5rem !important; }

    .hero-content {
        padding: 0 var(--space-2);
    }

    .problem-card, .product-box, .trust-item {
        padding: var(--space-5);
    }

    .hero-ctas {
        gap: var(--space-3);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Accessibility: Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent-primary);
    color: var(--bg-paper);
    padding: 0.75rem;
    z-index: 1000;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    width: 100%;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
}

/* Form feedback states */
.error-message {
    padding: 0.75rem 1rem;
    background-color: rgba(163, 77, 63, 0.1);
    border: 1px solid var(--accent-alert);
    border-radius: var(--border-radius);
    margin-top: 1rem;
    font-size: 0.875rem;
}

.warning-message {
    padding: 0.75rem 1rem;
    background-color: rgba(184, 116, 42, 0.1);
    border: 1px solid var(--accent-warm);
    border-radius: var(--border-radius);
    margin-top: 1rem;
    font-size: 0.875rem;
}

.success-message {
    padding: 0.75rem 1rem;
    background-color: rgba(47, 107, 87, 0.1);
    border: 1px solid var(--accent-primary);
    border-radius: var(--border-radius);
    margin-top: 1rem;
    font-size: 0.875rem;
}

.char-counter {
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Form field validation states */
.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: var(--accent-alert);
}

.form-group input:valid:not(:placeholder-shown),
.form-group select:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: var(--accent-primary);
}

/* Submit button loading state */
button[type="submit"]:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

button[type="submit"][aria-busy="true"] {
    position: relative;
}

button[type="submit"][aria-busy="true"]::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid var(--bg-paper);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Field hint text */
.field-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    font-style: italic;
}