/* ============================================
   TimeChain Partners - Website Styles
   Color Palette from Master Deck (2025.11.26)
   ============================================ */

/* ----- COLOR VARIABLES ----- */
:root {
    /* Primary Colors */
    --tc-orange: #BF6829;
    --tc-dark-gray: #7C7D7F;
    --tc-light-gray: #B7B7B7;
    --tc-black: #111111;
    --tc-white: #FEFEFC;
    
    /* Secondary Colors */
    --tc-dk-blue: #7092BE;
    --tc-lt-blue: #99D9EA;
    --tc-taupe: #8E8878;
    
    /* Functional Colors */
    --background-dark: var(--tc-black);
    --background-light: var(--tc-white);
    --text-primary: var(--tc-white);
    --text-secondary: var(--tc-light-gray);
    --text-dark: var(--tc-black);
    --accent: var(--tc-orange);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Borders & Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    background-color: var(--background-dark);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

/* ----- CONTAINER ----- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ----- TYPOGRAPHY ----- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.text-orange {
    color: var(--tc-orange);
}

.lead {
    font-size: 1.25rem;
    color: var(--tc-light-gray);
    line-height: 1.7;
}

/* ----- BUTTONS ----- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--tc-orange);
}

.btn-secondary {
    background-color: transparent;
    color: var(--tc-white);
    border-color: var(--tc-dark-gray);
}

.btn-secondary:hover {
    border-color: var(--tc-white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* ----- NAVIGATION ----- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(124, 125, 127, 0.2);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
}

.logo-img {
    width: 40px;
    height: 40px;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-accent {
    color: var(--tc-orange);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-logo .logo-img {
    width: 36px;
    height: 36px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-links a {
    color: var(--tc-light-gray);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--tc-white);
}

.nav-links .btn {
    margin-left: var(--spacing-sm);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--tc-white);
    transition: var(--transition);
}

/* Mobile menu active states */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: rgba(17, 17, 17, 0.98);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid rgba(124, 125, 127, 0.2);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: var(--spacing-sm) 0;
    }
    
    .nav-links .btn {
        margin-left: 0;
        margin-top: var(--spacing-sm);
        text-align: center;
    }
}

/* ----- HERO ----- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 var(--spacing-2xl);
    background: linear-gradient(135deg, var(--tc-black) 0%, #1a1a1a 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-eyebrow {
    color: var(--tc-orange);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--tc-light-gray);
    margin-bottom: var(--spacing-xl);
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(124, 125, 127, 0.2);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--tc-orange);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--tc-dark-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ----- SECTIONS ----- */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-dark {
    background-color: #0a0a0a;
}

.section-light {
    background-color: #1a1a1a;
}

.section-cta {
    background: linear-gradient(135deg, var(--tc-dk-blue) 0%, var(--tc-lt-blue) 100%);
    text-align: center;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.section-eyebrow {
    color: var(--tc-orange);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--tc-light-gray);
}

/* ----- TWO COLUMN LAYOUT ----- */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

/* ----- PROBLEM SECTION ----- */
.problem-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.problem-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--tc-dark-gray);
}

.problem-icon {
    color: var(--tc-dark-gray);
    font-size: 1.25rem;
    font-weight: 700;
}

.problem-item strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.problem-item p {
    color: var(--tc-light-gray);
    font-size: 0.9rem;
}

/* ----- APPROACH CARDS ----- */
.approach-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.approach-card {
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(124, 125, 127, 0.1);
    transition: var(--transition);
}

.approach-card:hover {
    border-color: var(--tc-orange);
    transform: translateY(-4px);
}

.approach-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.approach-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--tc-white);
}

.approach-card p {
    color: var(--tc-light-gray);
    font-size: 0.9rem;
}

/* ----- CURRICULUM TIMELINE ----- */
.curriculum-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.module-card {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(124, 125, 127, 0.1);
    transition: var(--transition);
}

.module-card:hover {
    border-color: var(--tc-orange);
}

.module-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--tc-orange);
    opacity: 0.5;
}

.module-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--tc-white);
}

.module-content > p {
    color: var(--tc-light-gray);
    margin-bottom: var(--spacing-md);
}

.module-topics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xs) var(--spacing-lg);
    list-style: none;
    color: var(--tc-dark-gray);
    font-size: 0.9rem;
}

.module-topics li::before {
    content: "→ ";
    color: var(--tc-orange);
}

/* ----- AUDIENCE ----- */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.audience-card {
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(124, 125, 127, 0.1);
}

.audience-card h3 {
    color: var(--tc-orange);
    margin-bottom: var(--spacing-sm);
}

.audience-card p {
    color: var(--tc-light-gray);
}

.not-for {
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(124, 125, 127, 0.1);
    border-radius: var(--border-radius-lg);
}

.not-for h4 {
    color: var(--tc-dark-gray);
    margin-bottom: var(--spacing-md);
}

.not-for ul {
    list-style: none;
    color: var(--tc-dark-gray);
}

.not-for li {
    margin-bottom: var(--spacing-xs);
}

/* ----- CTA SECTION ----- */
.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--tc-black);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    color: var(--tc-black);
    opacity: 0.8;
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
}

.section-cta .btn-primary {
    background-color: var(--tc-black);
    border-color: var(--tc-black);
}

.section-cta .btn-primary:hover {
    background-color: transparent;
    color: var(--tc-black);
}

/* ----- ABOUT ----- */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    margin-bottom: var(--spacing-md);
    color: var(--tc-light-gray);
}

.about-content .lead {
    font-size: 1.375rem;
}

/* ----- CONTACT ----- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info p {
    color: var(--tc-light-gray);
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-method {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-method strong {
    color: var(--tc-dark-gray);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-method a {
    color: var(--tc-orange);
    font-size: 1.125rem;
}

.contact-method a:hover {
    text-decoration: underline;
}

/* ----- FORMS ----- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    color: var(--tc-light-gray);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(124, 125, 127, 0.3);
    border-radius: var(--border-radius);
    color: var(--tc-white);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--tc-orange);
    background: rgba(255, 255, 255, 0.08);
}

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

/* ----- FOOTER ----- */
.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    background: #0a0a0a;
    border-top: 1px solid rgba(124, 125, 127, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(124, 125, 127, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-brand p {
    color: var(--tc-dark-gray);
    font-size: 0.875rem;
}

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

.footer-links a {
    color: var(--tc-dark-gray);
}

.footer-links a:hover {
    color: var(--tc-white);
}

.footer-bottom {
    text-align: center;
    color: var(--tc-dark-gray);
    font-size: 0.875rem;
}

.footer-tagline {
    margin-top: var(--spacing-sm);
    color: var(--tc-taupe);
    font-style: italic;
}

/* ----- RESPONSIVE ----- */
@media (max-width: 1024px) {
    .approach-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .hero-title {
        font-size: 2.75rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .two-column,
    .contact-grid,
    .audience-grid {
        grid-template-columns: 1fr;
    }
    
    .approach-grid {
        grid-template-columns: 1fr;
    }
    
    .module-card {
        grid-template-columns: 1fr;
    }
    
    .module-number {
        font-size: 2rem;
    }
    
    .module-topics {
        grid-template-columns: 1fr;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}