/* ===================================================
   Nutshell Ventures - Static Website Styles
   A clean, professional dark-themed design
   =================================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #111118;
    --color-bg-tertiary: #1a1a24;
    --color-bg-card: #15151d;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b6b7b;
    --color-accent: #4ade80;
    --color-accent-dim: #22c55e;
    --color-accent-glow: rgba(74, 222, 128, 0.15);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    
    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    --space-3xl: 8rem;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

/* ===================================================
   Navigation
   =================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
}

.navbar-scrolled {
    background-color: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

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

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

.logo-image {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-link-cta {
    padding: 0.6rem 1.2rem;
    background: var(--color-accent);
    color: var(--color-bg-primary) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.nav-link-cta:hover {
    background: var(--color-accent-dim);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger {
    background: transparent;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* ===================================================
   Buttons
   =================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 1rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
}

.btn-arrow {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-base);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

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

.btn-primary:hover {
    background: var(--color-accent-dim);
    box-shadow: 0 0 30px var(--color-accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-border-hover);
    background: rgba(255, 255, 255, 0.03);
}

/* ===================================================
   Hero Section
   =================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-3xl) 0;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 700px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.hero-title-accent {
    display: inline-block;
    position: relative;
}

.hero-title-accent::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-accent);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 560px;
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 60%);
    opacity: 0.5;
    pointer-events: none;
}

/* Background pattern overlay */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/background-pattern.svg');
    background-size: cover;
    background-position: center top;
    background-repeat: no-repeat;
    opacity: 1;
    pointer-events: none;
    z-index: 0;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    right: var(--space-lg);
    animation: float 3s ease-in-out infinite;
}

.scroll-circle {
    width: 100px;
    height: 100px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: border-color var(--transition-base);
}

.scroll-circle:hover {
    border-color: var(--color-accent);
}

.scroll-text {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.scroll-arrow {
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===================================================
   About Section
   =================================================== */
.about {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
}

.about-content {
    max-width: 900px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.section-title-accent {
    color: var(--color-accent);
    display: block;
}

.about-text {
    margin-bottom: var(--space-2xl);
}

.about-text p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

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

/* ===================================================
   Portfolio Section
   =================================================== */
.portfolio {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.portfolio-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

.portfolio-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.portfolio-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.portfolio-logo {
    width: 48px;
    height: 48px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.portfolio-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.portfolio-year {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    padding: 0.25rem 0.75rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
}

.portfolio-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.portfolio-description {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-accent);
    transition: gap var(--transition-base);
}

.portfolio-link:hover {
    gap: var(--space-sm);
}

.portfolio-link svg {
    width: 16px;
    height: 16px;
}

/* ===================================================
   Team Section
   =================================================== */
.team {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

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

.team-image-wrapper {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--space-lg);
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-border);
    transition: border-color var(--transition-base);
}

.team-card:hover .team-image-wrapper {
    border-color: var(--color-accent);
}

.team-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.team-card:hover .team-image {
    transform: scale(1.05);
}

.team-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.team-role {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.team-social {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: 50%;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

/* ===================================================
   Contact Section
   =================================================== */
.contact {
    padding: var(--space-3xl) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.contact-details {
    margin-bottom: var(--space-lg);
}

.contact-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.contact-item svg {
    width: 20px;
    height: 20px;
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

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

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

.form-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

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

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: var(--space-sm);
}

/* ===================================================
   Footer
   =================================================== */
.footer {
    padding: var(--space-2xl) 0 var(--space-lg);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-xl);
}

.footer-brand {
    max-width: 400px;
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-tagline {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

/* ===================================================
   Animations
   =================================================== */
.animate-target {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations for grid items */
.portfolio-card.animate-target:nth-child(1) { transition-delay: 0ms; }
.portfolio-card.animate-target:nth-child(2) { transition-delay: 100ms; }
.portfolio-card.animate-target:nth-child(3) { transition-delay: 200ms; }
.portfolio-card.animate-target:nth-child(4) { transition-delay: 300ms; }

.stat-item.animate-target:nth-child(1) { transition-delay: 0ms; }
.stat-item.animate-target:nth-child(2) { transition-delay: 100ms; }
.stat-item.animate-target:nth-child(3) { transition-delay: 200ms; }
.stat-item.animate-target:nth-child(4) { transition-delay: 300ms; }

.team-card.animate-target:nth-child(1) { transition-delay: 0ms; }
.team-card.animate-target:nth-child(2) { transition-delay: 150ms; }

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

/* Tablet and below */
@media (max-width: 992px) {
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}

/* Tablet */
@media (max-width: 768px) {
    :root {
        --container-padding: 1.25rem;
    }
    
    /* Mobile Navigation */
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg-primary);
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }
    
    .nav-menu.nav-open {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .nav-link {
        font-size: 1.5rem;
        font-family: var(--font-display);
        font-weight: 600;
    }
    
    .nav-link-cta {
        font-size: 1rem;
    }
    
    /* Hero adjustments */
    .hero {
        padding-top: 120px;
        min-height: auto;
        padding-bottom: var(--space-2xl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    /* Portfolio grid */
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    /* Team grid */
    .team-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .team-image-wrapper {
        width: 160px;
        height: 160px;
    }
    
    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: var(--space-xl);
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .portfolio-card {
        padding: var(--space-md);
    }
    
    .contact-form-wrapper {
        padding: var(--space-lg);
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    .animate-target {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .scroll-indicator {
        animation: none;
    }
    
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}