/* ========================================
   PCS Netwerk Nijmegen - Huisstijl CSS
   ======================================== */

/* CSS Variables - Huisstijl Kleuren */
:root {
    /* Primary Colors */
    --color-primary: #0d7377;
    --color-primary-light: #14919b;
    --color-primary-dark: #095456;

    /* Accent Colors */
    --color-accent: #ff6b6b;
    --color-accent-light: #ff8e8e;
    --color-accent-dark: #e85555;

    /* Neutrals */
    --color-dark: #1a1a2e;
    --color-gray-900: #2d2d44;
    --color-gray-700: #4a4a65;
    --color-gray-500: #7a7a95;
    --color-gray-300: #b8b8c8;
    --color-gray-100: #f0f0f5;
    --color-white: #ffffff;

    /* Functional Colors */
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);

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

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-primary-light);
}

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-dark);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-md);
}

.lead {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-gray-700);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(13, 115, 119, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(13, 115, 119, 0.4);
    color: var(--color-white);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

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

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-primary-dark);
}

.btn-full {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-100);
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

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

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

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

.logo-icon {
    width: 42px;
    height: 42px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-accent {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 500;
    color: var(--color-gray-700);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-nav {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: var(--radius-md);
}

.btn-nav::after {
    display: none;
}

.btn-nav:hover {
    background: var(--color-primary-dark);
    color: var(--color-white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 var(--spacing-4xl);
    overflow: hidden;
    background: linear-gradient(170deg, #ffffff 0%, #f4fafb 40%, #eef7f7 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
}

.hero-shape-1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    top: -300px;
    right: -200px;
    opacity: 0.07;
}

.hero-shape-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
    bottom: -200px;
    left: -150px;
    opacity: 0.05;
}

.hero-shape-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
    top: 40%;
    left: 25%;
    opacity: 0.06;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

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

.hero-title {
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.brain-network {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
}

.brain-svg {
    width: 100%;
    height: auto;
}

/* Node animations */
.node {
    animation: pulse 3s ease-in-out infinite;
}

.node-1 { animation-delay: 0s; }
.node-2 { animation-delay: 0.3s; }
.node-3 { animation-delay: 0.6s; }
.node-4 { animation-delay: 0.9s; }
.node-5 { animation-delay: 1.2s; }
.node-6 { animation-delay: 1.5s; }
.node-7 { animation-delay: 1.8s; }
.node-8 { animation-delay: 2.1s; }
.node-9 { animation-delay: 2.4s; }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.pulse-ring {
    animation: ring-pulse 3s ease-out infinite;
}

.pulse-ring-2 {
    animation-delay: 1.5s;
}

@keyframes ring-pulse {
    0% { transform-origin: center; transform: scale(1); opacity: 0.5; }
    100% { transform-origin: center; transform: scale(2); opacity: 0; }
}

.connection-line {
    animation: line-glow 4s ease-in-out infinite;
}

@keyframes line-glow {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.5; }
}

/* Section Styles */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-label {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(13, 115, 119, 0.08), rgba(20, 145, 155, 0.06));
    color: var(--color-primary);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(13, 115, 119, 0.12);
}

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

.section-subtitle {
    color: var(--color-gray-700);
    font-size: 1.125rem;
}

/* Specialisaties Section */
.specialisaties {
    background: var(--color-gray-100);
}

.specialisaties-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.spec-card {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.spec-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.spec-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.spec-card:hover::before {
    opacity: 1;
}

.spec-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    color: var(--color-white);
}

.spec-icon svg {
    width: 32px;
    height: 32px;
}

.spec-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.spec-card p {
    color: var(--color-gray-700);
    margin-bottom: 0;
}

/* Over Ons Section */
.over-ons-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.over-ons-text .section-label {
    margin-bottom: var(--spacing-sm);
}

.over-ons-text .section-title {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.over-ons-text .lead {
    margin-bottom: var(--spacing-lg);
}

.features-list {
    margin: var(--spacing-xl) 0;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    font-weight: 500;
    color: var(--color-gray-900);
}

.features-list svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

.team-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.team-member-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.team-member-preview:hover .avatar {
    transform: scale(1.1);
}

.team-member-preview span {
    font-size: 0.875rem;
    color: var(--color-gray-700);
    font-weight: 500;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

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

.cta p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

/* Contact Section */
.contact {
    background: var(--color-gray-100);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-form {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

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

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-500);
}

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

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 4px;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: 400;
    font-size: 0.875rem;
}

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

.info-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all var(--transition-normal);
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.info-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(13, 115, 119, 0.1), rgba(20, 145, 155, 0.1));
    border-radius: var(--radius-md);
    color: var(--color-primary);
    flex-shrink: 0;
}

.info-icon svg {
    width: 24px;
    height: 24px;
}

.info-content h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.info-content p {
    margin-bottom: 0;
    color: var(--color-gray-700);
    font-size: 0.9375rem;
}

.info-content a {
    color: var(--color-primary);
}

/* Footer */
.footer {
    background: linear-gradient(180deg, var(--color-dark) 0%, #141428 100%);
    color: var(--color-gray-300);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--color-gray-900);
}

.footer-brand .logo {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: var(--color-gray-500);
    font-size: 0.9375rem;
}

.footer-links h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray-500);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .brain-network {
        max-width: 300px;
    }

    .specialisaties-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .over-ons-content {
        grid-template-columns: 1fr;
    }

    .over-ons-text .section-title {
        text-align: center;
    }

    .over-ons-text {
        text-align: center;
    }

    .features-list li {
        justify-content: center;
    }

    .team-preview {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

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

    .hero {
        min-height: auto;
        padding: 120px 0 var(--spacing-3xl);
    }

    .hero-buttons {
        flex-direction: column;
    }

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

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

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

    .footer-brand {
        margin-bottom: var(--spacing-xl);
    }

    .footer-brand .logo {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .team-preview {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .avatar {
        width: 60px;
        height: 60px;
        font-size: 1rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Scroll animations */
[data-aos] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation delays for grid children */
.specialisaties-grid [data-aos]:nth-child(2) { transition-delay: 0.1s; }
.specialisaties-grid [data-aos]:nth-child(3) { transition-delay: 0.2s; }