/* ============================================
   THE COLLECTIVE — style.css
   Design DNA shared with work4pay.org:
   dark "frost" theme, serif display type.
   Accent shifted to champagne gold for the
   private-club / business-facing identity.
   ============================================ */

:root {
    /* Base palette */
    --color-void: #0a0908;
    --color-surface: rgba(255, 255, 255, 0.02);
    --color-text: #f2efe9;
    --color-text-muted: rgba(242, 239, 233, 0.62);
    --color-text-subtle: rgba(242, 239, 233, 0.4);

    /* Frost borders */
    --frost-border: rgba(232, 214, 175, 0.14);
    --frost-border-hover: rgba(232, 214, 175, 0.3);

    /* Accent — champagne gold */
    --accent-gold: #d8b45a;
    --accent-gold-bright: #ecd28a;
    --accent-gold-soft: rgba(216, 180, 90, 0.12);
    --accent-gold-glow: rgba(216, 180, 90, 0.25);

    /* Border radius scale */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-pill: 9999px;

    /* Spacing scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Fira Code', 'Monaco', monospace;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ============================================
   LIGHT MODE OVERRIDES
   ============================================ */
body.light-mode {
    --color-void: #f5f2ec;
    --color-surface: rgba(28, 24, 16, 0.02);
    --color-text: #221e17;
    --color-text-muted: rgba(34, 30, 23, 0.65);
    --color-text-subtle: rgba(34, 30, 23, 0.45);

    --frost-border: rgba(34, 30, 23, 0.12);
    --frost-border-hover: rgba(34, 30, 23, 0.28);

    --accent-gold: #a07c1f;
    --accent-gold-bright: #7d5f10;
    --accent-gold-soft: rgba(160, 124, 31, 0.1);
    --accent-gold-glow: rgba(160, 124, 31, 0.2);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-void);
    color: var(--color-text);
    line-height: 1.7;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-base), color var(--transition-base);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

a {
    color: var(--accent-gold);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-gold-bright);
}

h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
}

.display-serif {
    font-family: var(--font-display);
}

::selection {
    background: var(--accent-gold);
    color: #0a0908;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 9, 8, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base), background var(--transition-base);
}

body.light-mode .site-header {
    background: rgba(245, 242, 236, 0.8);
}

.site-header.scrolled {
    border-bottom-color: var(--frost-border);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    height: 72px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.logo-link:hover {
    color: var(--color-text);
}

.logo-icon {
    color: var(--accent-gold);
    font-size: 1.1rem;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.nav-link {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 400;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-gold);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.theme-toggle,
.mobile-menu-toggle {
    background: none;
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover,
.mobile-menu-toggle:hover {
    color: var(--accent-gold);
    border-color: var(--frost-border-hover);
}

.mobile-menu-toggle {
    display: none;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gold);
    color: #14110a;
    border-color: var(--accent-gold);
}

.btn-primary:hover {
    background: var(--accent-gold-bright);
    border-color: var(--accent-gold-bright);
    color: #14110a;
    box-shadow: 0 0 24px var(--accent-gold-glow);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--frost-border);
}

.btn-outline:hover {
    border-color: var(--frost-border-hover);
    color: var(--accent-gold);
}

.btn-large {
    padding: 0.9rem 2rem;
    font-size: 1rem;
}

.btn-small {
    padding: 0.45rem 1.1rem;
    font-size: 0.85rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================
   HERO
   ============================================ */
.hero-section {
    min-height: 92vh;
    display: flex;
    align-items: center;
    padding: calc(72px + var(--space-3xl)) 0 var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 600px;
    background: radial-gradient(ellipse at center, var(--accent-gold-soft) 0%, transparent 65%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 860px;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-gold);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-pill);
    padding: 0.4rem 1.1rem;
    margin-bottom: var(--space-lg);
    background: var(--color-surface);
}

.hero-section h1 {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 7vw, 4.8rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.accent-word {
    color: var(--accent-gold);
    font-style: italic;
}

.tagline {
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    color: var(--color-text-muted);
    max-width: 720px;
    margin: 0 auto var(--space-xl);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.hero-facts {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.hero-fact {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

.hero-fact i {
    color: var(--accent-gold);
}

/* ============================================
   SECTIONS
   ============================================ */
.content-section {
    padding: var(--space-3xl) 0;
    border-top: 1px solid var(--frost-border);
}

.section-container {
    max-width: 1100px;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto var(--space-2xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-bottom: var(--space-sm);
}

.section-header h2 {
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    margin-bottom: var(--space-sm);
}

.section-header p {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.section-footnote {
    text-align: center;
    color: var(--color-text-subtle);
    font-size: 0.95rem;
    margin-top: var(--space-xl);
}

/* ============================================
   CARDS
   ============================================ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.card-grid.three-col {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    border-color: var(--frost-border-hover);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

body.light-mode .card:hover {
    box-shadow: 0 12px 40px rgba(34, 30, 23, 0.12);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--accent-gold-soft);
    color: var(--accent-gold);
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
}

.card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: var(--space-xs);
}

.card p {
    color: var(--color-text-muted);
    font-size: 0.97rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ============================================
   FEATURE SECTION (Voice Agents)
   ============================================ */
.feature-section {
    background: var(--color-surface);
}

.feature-layout {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.feature-text h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.feature-text > p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.feature-list {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.feature-list li {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.97rem;
}

.feature-list i {
    color: var(--accent-gold);
    margin-top: 0.35rem;
}

.feature-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.option-card {
    background: var(--color-void);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: border-color var(--transition-base);
}

body.light-mode .option-card {
    background: #fffdf8;
}

.option-card:hover {
    border-color: var(--frost-border-hover);
}

.option-card-icon {
    color: var(--accent-gold);
    font-size: 1.3rem;
    margin-bottom: var(--space-sm);
}

.option-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
}

.option-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ============================================
   ENGAGEMENT CARDS
   ============================================ */
.engagement-card {
    display: flex;
    flex-direction: column;
}

.engagement-sub {
    font-style: italic;
    font-family: var(--font-display);
    color: var(--accent-gold) !important;
    font-size: 0.95rem !important;
    margin-bottom: var(--space-sm);
}

.fact-list {
    list-style: none;
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

.fact-list li {
    position: relative;
    padding-left: 1.4rem;
    margin-bottom: var(--space-xs);
    color: var(--color-text-muted);
    font-size: 0.94rem;
}

.fact-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
}

.engagement-best {
    border-top: 1px solid var(--frost-border);
    padding-top: var(--space-sm);
    font-size: 0.9rem !important;
    color: var(--color-text-subtle) !important;
}

/* ============================================
   PROCESS STEPS
   ============================================ */
.steps {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.step {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.step-number {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--accent-gold);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-pill);
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
}

.step-content h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 0.3rem;
}

.step-content p {
    color: var(--color-text-muted);
    font-size: 0.97rem;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: var(--space-sm);
}

.contact-info > p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.contact-note {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    background: var(--color-surface);
}

.contact-note i {
    color: var(--accent-gold);
    margin-top: 0.3rem;
}

.contact-note p {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

.contact-form {
    background: var(--color-surface);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-void);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-md);
    padding: 0.7rem 0.9rem;
    transition: border-color var(--transition-fast);
}

body.light-mode .form-group input,
body.light-mode .form-group select,
body.light-mode .form-group textarea {
    background: #fffdf8;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
}

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

.form-group 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='%23d8b45a' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    cursor: pointer;
}

.form-status {
    margin-top: var(--space-sm);
    text-align: center;
    font-size: 0.9rem;
    min-height: 1.4em;
}

.form-status.success {
    color: #7dd8a0;
}

.form-status.error {
    color: #e88a7a;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    border-top: 1px solid var(--frost-border);
    padding-top: var(--space-2xl);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.92rem;
    margin-top: var(--space-sm);
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-subtle);
    margin-bottom: var(--space-xs);
}

.footer-col a {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--frost-border);
    padding: var(--space-md) 0;
}

.footer-bottom p {
    color: var(--color-text-subtle);
    font-size: 0.85rem;
    text-align: center;
}

/* ============================================
   MODALS
   ============================================ */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.modal.open {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--color-void);
    border: 1px solid var(--frost-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 560px;
    max-height: 80vh;
    overflow-y: auto;
}

body.light-mode .modal-content {
    background: #fffdf8;
}

.modal-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.modal-content p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.modal-close {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: var(--space-xs);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--accent-gold);
}

body.modal-open {
    overflow: hidden;
}

/* ============================================
   SCROLL REVEAL
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 960px) {
    .feature-layout,
    .contact-layout,
    .footer-container {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 820px) {
    .main-navigation {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-void);
        border-bottom: 1px solid var(--frost-border);
        display: none;
    }

    body.light-mode .main-navigation {
        background: #f5f2ec;
    }

    .main-navigation.open {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-sm);
    }

    .nav-link {
        display: block;
        padding: var(--space-xs) 0;
        font-size: 1rem;
    }

    .mobile-menu-toggle {
        display: inline-flex;
    }

    .header-cta {
        display: none;
    }

    .hero-facts {
        gap: var(--space-md);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .step {
        gap: var(--space-md);
    }
}