/* Sin Shin Advisory Design System - Professional AI-Aligned Recruitment */

:root {
    /* Core Brand Colors - Navy & Blue Gradients */
    --background: hsl(0, 0%, 97.5%);
    --foreground: hsl(210, 92%, 10%);
    
    --navy-primary: hsl(210, 92%, 10%);      /* #0B1F33 */
    --navy-secondary: hsl(210, 85%, 15%);
    --blue-gradient-start: hsl(213, 100%, 40%); /* #0066CC */
    --blue-gradient-end: hsl(188, 100%, 42%);   /* #00C1D4 */
    --sky-accent: hsl(195, 100%, 69%);          /* #61D6FF */
    --soft-white: hsl(0, 0%, 97.6%);           /* #F9F9F9 */

    /* Semantic Token Mapping */
    --primary: var(--navy-primary);
    --primary-foreground: var(--soft-white);
    
    --secondary: hsl(210, 40%, 96.1%);
    --secondary-foreground: var(--navy-primary);

    --card: hsl(0, 0%, 100%);
    --card-foreground: var(--navy-primary);
    --card-glass: hsla(0, 0%, 100%, 0.1);

    --muted: hsl(210, 40%, 96.1%);
    --muted-foreground: hsl(215.4, 16.3%, 46.9%);

    --accent: var(--sky-accent);
    --accent-foreground: var(--navy-primary);

    --border: hsl(214.3, 31.8%, 91.4%);
    --input: hsl(214.3, 31.8%, 91.4%);
    --ring: var(--sky-accent);

    /* Design System Extensions */
    --gradient-primary: linear-gradient(135deg, var(--blue-gradient-start), var(--blue-gradient-end));
    --gradient-hero: linear-gradient(135deg, var(--navy-primary) 0%, var(--blue-gradient-start) 100%);
    --gradient-subtle: linear-gradient(180deg, var(--soft-white), var(--background));
    
    --shadow-glass: 0 8px 32px hsla(210, 92%, 10%, 0.1);
    --shadow-card: 0 4px 20px hsla(210, 92%, 10%, 0.08);
    --shadow-hero: 0 20px 60px hsla(210, 92%, 10%, 0.15);

    --radius: 0.75rem;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Open Sans', system-ui, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', 'Manrope', system-ui, sans-serif;
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Utility Classes */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sky-accent {
    color: var(--sky-accent);
}

.hover-lift {
    transition: all 0.3s ease-in-out;
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-card);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hero);
}

.btn-hero {
    position: relative;
    overflow: hidden;
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-hero);
}

.btn-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-100%) skewX(-45deg);
    transition: transform 0.3s ease;
}

.btn-hero:hover::before {
    transform: translateX(100%) skewX(-45deg);
}

.btn-outline {
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-ghost {
    color: var(--accent);
    background: transparent;
}

.btn-ghost:hover {
    color: var(--accent-foreground);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.section-description {
    font-size: 1.25rem;
    color: var(--muted-foreground);
    max-width: 48rem;
    margin: 0 auto;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: white;
    background: var(--gradient-hero);
}

.hero-background {
    position: absolute;
    inset: 0;
    background: rgba(11, 31, 51, 0.85);
    z-index: 2;
}

.hero-image-overlay {
    position: absolute;
    inset: 0;
    opacity: 0.3;
    background-image: url('src/assets/hero-professionals.jpg');
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.partnership-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(97, 214, 255, 0.3);
    border-radius: var(--radius);
    backdrop-filter: blur(16px);
    margin-bottom: 2rem;
    color: var(--sky-accent);
    animation: fade-in 0.6s ease-out;
}

.hero-main {
    max-width: 64rem;
    margin: 0 auto 3rem;
    animation: slide-up 0.6s ease-out;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
    max-width: 48rem;
    margin: 0 auto;
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
    margin-bottom: 4rem;
    animation: fade-in 0.6s ease-out;
}

.hero-stats {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 32rem;
    margin: 0 auto;
    text-align: center;
}

.stat-item {
    cursor: pointer;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--sky-accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* What We Do Section */
.what-we-do-section {
    padding: 6rem 0;
    background: var(--background);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: var(--accent);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--muted-foreground);
}

/* Service Bundles Section */
.service-bundles-section {
    padding: 6rem 0;
    background: var(--gradient-subtle);
}

.bundles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.bundle-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.5s ease;
}

.bundle-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hero);
    border-color: var(--accent);
}

.bundle-card.featured {
    transform: scale(1.05);
    z-index: 10;
}

.bundle-header {
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.bundle-badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.bundle-badge.premium {
    background: var(--gradient-hero);
    color: white;
}

.bundle-badge.popular {
    background: var(--gradient-primary);
    color: white;
}

.bundle-badge.essential {
    background: var(--muted);
    color: var(--muted-foreground);
}

.bundle-icon {
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.bundle-title {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.bundle-target {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    margin-bottom: 1rem;
}

.bundle-tagline {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--accent);
    font-style: italic;
}

.bundle-content {
    padding: 2rem;
}

.bundle-features {
    list-style: none;
    margin-bottom: 2rem;
}

.bundle-features li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.bundle-features li::before {
    content: '';
    width: 0.5rem;
    height: 0.5rem;
    background: var(--accent);
    border-radius: 50%;
    margin-right: 0.75rem;
    margin-top: 0.5rem;
    flex-shrink: 0;
}

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

/* Why Choose Us Section */
.why-choose-us-section {
    padding: 6rem 0;
    background: var(--background);
}

.differentiators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 5rem;
}

.diff-card {
    text-align: center;
    padding: 2rem;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.diff-card:hover {
    border-color: var(--accent);
}

.diff-icon {
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.diff-title {
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.diff-description {
    color: var(--muted-foreground);
    margin-bottom: 1.5rem;
}

.diff-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
}

.diff-highlight {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent);
    font-style: italic;
}

/* Testimonials */
.testimonials-section {
    background: var(--gradient-subtle);
    border-radius: calc(var(--radius) * 2);
    padding: 2rem 3rem;
}

.testimonials-title {
    font-size: 1.875rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.star-filled {
    width: 1rem;
    height: 1rem;
    fill: var(--accent);
    color: var(--accent);
}

.testimonial-quote {
    color: var(--muted-foreground);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.author-name {
    font-weight: 600;
    color: var(--primary);
}

.author-role {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* Insights Section */
.insights-section {
    padding: 6rem 0;
    background: var(--gradient-subtle);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.insight-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.3s ease;
}

.insight-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-card);
}

.insight-card.featured-insight {
    grid-column: span 2;
    grid-row: span 1;
}

.insight-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.insight-badges {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.insight-category {
    background: rgba(97, 214, 255, 0.1);
    color: var(--accent);
    border: 1px solid rgba(97, 214, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
}

.insight-featured {
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
}

.insight-title {
    font-size: 1.25rem;
    color: var(--primary);
    transition: color 0.3s ease;
}

.featured-insight .insight-title {
    font-size: 1.875rem;
}

.insight-card:hover .insight-title {
    color: var(--accent);
}

.insight-content {
    padding: 1.5rem;
}

.insight-excerpt {
    color: var(--muted-foreground);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.featured-insight .insight-excerpt {
    font-size: 1.125rem;
}

.insight-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.insight-author,
.insight-time {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.insights-cta {
    text-align: center;
}

/* Contact Section */
.contact-section {
    padding: 6rem 0;
    background: var(--background);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    padding: 2rem;
}

.form-title {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.form-group label {
    font-weight: 500;
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 2px);
    background: var(--background);
    color: var(--foreground);
    font-family: inherit;
}

.form-group textarea {
    min-height: 6rem;
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(97, 214, 255, 0.2);
}

.form-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-card {
    background: var(--gradient-subtle);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 2rem;
}

.contact-title {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--muted-foreground);
}

.contact-item i {
    color: var(--accent);
}

.process-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 2rem;
}

.process-title {
    font-size: 1.125rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.step-number {
    width: 2rem;
    height: 2rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.step-title {
    font-weight: 500;
    color: var(--primary);
}

.step-description {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* Footer */
.footer {
    background: var(--primary);
    color: var(--primary-foreground);
    padding: 3rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand {
    max-width: 28rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: transparent;
    color: var(--primary-foreground);
    border-radius: var(--radius);
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

.footer-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-contact {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.contact-email,
.contact-phone {
    margin-bottom: 0.25rem;
}

.footer-separator {
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 2rem 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Animations */
@keyframes circuit-flow {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

@keyframes fade-in {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes slide-up {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-ctas {
        flex-direction: column;
        align-items: stretch;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-description {
        font-size: 1.125rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

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

    .form-actions {
        flex-direction: column;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .insight-card.featured-insight {
        grid-column: span 1;
    }

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

    .bundle-card.featured {
        transform: none;
    }
}

@media (min-width: 640px) {
    .hero-ctas {
        flex-direction: row;
    }

    .form-actions {
        flex-direction: row;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 4.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 3rem;
    }
}