/* ============================================
   TrainFlow 365 - Shared Styles
   ============================================ */

:root {
    --color-bg: #FAFAF8;
    --color-surface: #FFFFFF;
    --color-text: #1A1A1A;
    --color-text-muted: #5C5C5C;
    --color-accent: #0F4C3A;
    --color-accent-light: #E8F0ED;
    --color-border: #E5E5E3;
    --color-highlight: #FF6B35;
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;
    --max-width: 1100px;
    --spacing-unit: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   Layout
   ============================================ */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

/* ============================================
   Navigation
   ============================================ */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 250, 248, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: calc(var(--spacing-unit) * 2) 0;
}

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

.logo {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-accent);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-icon svg {
    width: 18px;
    height: 18px;
    stroke: white;
}

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

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.nav-cta {
    background: var(--color-accent);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.nav-cta:hover {
    background: #0a3628;
    transform: translateY(-1px);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    padding: calc(var(--spacing-unit) * 20) 0 calc(var(--spacing-unit) * 12);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-accent-light) 0%, transparent 70%);
    opacity: 0.6;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 6);
    align-items: center;
}

.hero-content {
    position: relative;
    max-width: 600px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image img {
    width: 100%;
    max-width: 300px;
    height: auto;
    object-fit: contain;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    padding: 8px 14px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: calc(var(--spacing-unit) * 3);
    animation: fadeInUp 0.6s ease-out;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: calc(var(--spacing-unit) * 3);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero h1 .highlight {
    color: var(--color-accent);
    font-style: italic;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: calc(var(--spacing-unit) * 5);
    max-width: 560px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--color-accent);
    color: white;
    padding: 16px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-cta:hover {
    background: #0a3628;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 76, 58, 0.2);
}

.hero-cta svg {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}

.hero-cta:hover svg {
    transform: translateX(4px);
}

/* ============================================
   Problem Section
   ============================================ */

.problem {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.problem-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.problem-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-highlight);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.problem-card {
    padding: calc(var(--spacing-unit) * 4);
    background: var(--color-bg);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.problem-card-icon {
    width: 48px;
    height: 48px;
    background: #FFF0EB;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.problem-card-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-highlight);
}

.problem-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* ============================================
   Solution Section
   ============================================ */

.solution {
    padding: calc(var(--spacing-unit) * 12) 0;
}

.solution-header {
    max-width: 600px;
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.solution-header h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

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

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.feature {
    padding: calc(var(--spacing-unit) * 4);
    background: var(--color-surface);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
}

.feature:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 20px rgba(15, 76, 58, 0.08);
}

.feature-number {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.feature h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* ============================================
   Integrations Section
   ============================================ */

.integrations {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.integrations h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.integrations .section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.integration-carousel-wrapper {
    overflow: hidden;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 1) 0;
}

.integration-carousel {
    position: relative;
}

.integration-track {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
    animation: scroll 30s linear infinite;
}

.integration-track:hover {
    animation-play-state: paused;
}

.integration-slide {
    flex: 0 0 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    padding: calc(var(--spacing-unit) * 2);
    background: white;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
}

.integration-slide:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 16px rgba(15, 76, 58, 0.12);
}

.integration-slide img {
    max-width: 100%;
    max-height: 70px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.integration-slide:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-150px * 6 - var(--spacing-unit) * 4 * 6));
    }
}

/* ============================================
   Process Section
   ============================================ */

.process {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-accent);
    color: white;
}

.process h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 6);
    text-align: center;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 3);
}

.step {
    text-align: center;
    padding: calc(var(--spacing-unit) * 3);
}

.step-number {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto calc(var(--spacing-unit) * 2);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

.step h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.step p {
    opacity: 0.85;
    font-size: 0.9rem;
}

/* ============================================
   Social Proof
   ============================================ */

.proof {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.proof-carousel {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
}

.proof-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    opacity: 0;
    display: none;
    transition: opacity 0.5s ease-in-out;
}

.proof-content.active {
    opacity: 1;
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

.proof-quote {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    font-weight: 400;
    font-style: italic;
    line-height: 1.5;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--color-text);
}

.proof-source {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.proof-avatar {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.2rem;
}

.proof-details {
    text-align: left;
}

.proof-name {
    font-weight: 600;
    font-size: 1rem;
}

.proof-role {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.proof-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: calc(var(--spacing-unit) * 5);
}

.proof-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border);
    cursor: pointer;
    transition: all 0.3s ease;
}

.proof-dot:hover {
    background: var(--color-accent);
    opacity: 0.7;
}

.proof-dot.active {
    background: var(--color-accent);
    width: 28px;
    border-radius: 5px;
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
    padding: calc(var(--spacing-unit) * 12) 0;
    text-align: center;
}

.cta h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.cta p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--color-accent);
    color: white;
    padding: 18px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.2s ease;
}

.cta-button:hover {
    background: #0a3628;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 76, 58, 0.2);
}

/* ============================================
   Footer
   ============================================ */

footer {
    padding: calc(var(--spacing-unit) * 6) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.footer-logo {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-accent);
}

.footer-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-badges {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
}

.footer-badge {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-badge svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   Page Hero (About/Contact pages)
   ============================================ */

.page-hero {
    padding: calc(var(--spacing-unit) * 20) 0 calc(var(--spacing-unit) * 8);
    text-align: center;
}

.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.page-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ============================================
   About Page
   ============================================ */

.about-intro {
    padding: calc(var(--spacing-unit) * 8) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: calc(var(--spacing-unit) * 8);
    align-items: center;
}

.about-text h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.about-text p {
    color: var(--color-text-muted);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.about-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.about-image img {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: 12px;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.founder-info {
    text-align: center;
    max-width: 300px;
}

.founder-name {
    font-size: 1.1rem;
    margin-bottom: calc(var(--spacing-unit) * 1);
    color: var(--color-text);
}

.founder-name strong {
    font-weight: 600;
}

.founder-title {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ============================================
   Certifications Section
   ============================================ */

.certifications {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.certifications h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    max-width: 800px;
    margin: 0 auto;
}

.cert-card {
    text-align: center;
    padding: calc(var(--spacing-unit) * 3);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cert-image {
    margin-bottom: calc(var(--spacing-unit) * 2);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    width: 120px;
}

.cert-image img {
    width: 100%;
    max-width: 120px;
    height: auto;
    display: block;
    object-fit: contain;
}

.cert-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.cert-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ============================================
   AI Section
   ============================================ */

.ai-section {
    padding: calc(var(--spacing-unit) * 10) 0;
}

.ai-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.ai-header h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.ai-card {
    padding: calc(var(--spacing-unit) * 4);
    background: var(--color-surface);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.ai-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.ai-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-accent);
}

.ai-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* ============================================
   Screenshots Section
   ============================================ */

.screenshots {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.screenshots h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    margin-top: calc(var(--spacing-unit) * 6);
}

.screenshot-card {
    text-align: center;
}

.screenshot-image {
    margin-bottom: calc(var(--spacing-unit) * 2);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    aspect-ratio: 16 / 9;
    height: 300px;
}

.screenshot-image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.screenshot-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ============================================
   Contact Page
   ============================================ */

.contact-section {
    padding: calc(var(--spacing-unit) * 20) 0 calc(var(--spacing-unit) * 12);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: calc(var(--spacing-unit) * 10);
    align-items: start;
}

.contact-info h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.contact-subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: calc(var(--spacing-unit) * 5);
}

.contact-details {
    margin-bottom: calc(var(--spacing-unit) * 5);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-text);
}

.contact-item svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-accent);
}

.contact-item a {
    color: var(--color-accent);
    text-decoration: none;
}

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

.calendly-prompt {
    padding: calc(var(--spacing-unit) * 3);
    background: var(--color-accent-light);
    border-radius: 12px;
}

.calendly-prompt h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.calendly-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}

.calendly-button svg {
    width: 16px;
    height: 16px;
}

.calendly-button:hover {
    text-decoration: underline;
}

/* ============================================
   Contact Form
   ============================================ */

.contact-form-wrapper {
    background: var(--color-surface);
    padding: calc(var(--spacing-unit) * 5);
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 3);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--color-bg);
    transition: border-color 0.2s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--color-accent);
    color: white;
    padding: 16px 28px;
    border: none;
    border-radius: 8px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.submit-button:hover {
    background: #0a3628;
    transform: translateY(-1px);
}

.submit-button svg {
    width: 18px;
    height: 18px;
}

/* ============================================
   Image Placeholders (Remove in production)
   ============================================ */

.image-placeholder {
    background: var(--color-border);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-weight: 500;
}

.image-placeholder.small {
    width: 100px;
    height: 100px;
    margin: 0 auto;
}

.image-placeholder.large {
    width: 100%;
    height: 250px;
}

.image-placeholder span {
    font-size: 0.9rem;
}

.image-placeholder small {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 4px;
}

/* For actual images, replace placeholders with:
   <img src="images/your-image.jpg" alt="Description"> 
*/

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
    .hero {
        padding: calc(var(--spacing-unit) * 16) 0 calc(var(--spacing-unit) * 8);
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 4);
    }

    .hero-image {
        order: -1;
    }

    .nav-cta {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 4);
    }

    .about-image {
        order: -1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 6);
    }

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