:root {
    --bg-color: #F9F8F6;
    --bg-white: #FFFFFF;
    --bg-dark: #292524; /* Stone-800 */
    --bg-light: #F0F4F8; /* Slate-50 ish */
    --text-main: #2D3748;
    --text-muted: #4A5568;
    --text-light: #D6D3D1; /* Stone-300 */
    --accent: #78716C; /* Stone-500 */
    --border: #E2E8F0;
    --btn-bg: #334155; /* Slate-700 */
    --btn-hover: #1E293B; /* Slate-800 */
    
    --font-main: 'DM Sans', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 2rem;
    color: #1C1917; /* Darker Stone */
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1C1917;
}

h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1C1917;
}

p {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

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

.text-center { text-align: center; }
.hidden { display: none; }

section {
    padding: 6rem 0;
}

/* 1. Header */
header {
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.hero-container {
    max-width: 800px;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin-bottom: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: #E7E5E4; /* Stone-200 */
    color: #57534E; /* Stone-600 */
    border-radius: 9999px;
}

.hero-text {
    font-size: 1.25rem;
    max-width: 650px;
    margin: 0 auto 3rem auto;
}

.scroll-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--accent);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color 0.3s ease;
}

.scroll-link:hover {
    color: var(--text-main);
}

/* 2. Idee & Content */
.bg-white { background-color: var(--bg-white); }
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--bg-dark); color: var(--text-light); }

.content-block {
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
}

.content-block p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

/* 3. Grid / Cards */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-top: 4rem;
}

.card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.05);
}

.icon-wrapper {
    background-color: #F1F5F9;
    padding: 1rem;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    color: #64748B;
}

/* 4. Dark Section */
.bg-dark h2 { color: #F5F5F4; }
.bg-dark p.lead { color: #D6D3D1; font-size: 1.25rem; }
.bg-dark p.sub-lead { color: #A8A29E; }
.bg-dark .icon-large { color: #A8A29E; margin-bottom: 2rem; }

.narrow { max-width: 700px; margin: 0 auto; }

/* 5. Form */
.contact-form {
    max-width: 500px;
    margin: 0 auto;
    text-align: left;
}

.form-group { margin-bottom: 1.5rem; }

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background-color: #F9FAFB;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, background-color 0.2s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #94A3B8;
    background-color: #fff;
}

button[type="submit"] {
    width: 100%;
    padding: 1rem;
    background-color: var(--btn-bg);
    color: white;
    font-weight: 500;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

button[type="submit"]:hover {
    background-color: var(--btn-hover);
}

button[type="submit"]:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Success Message */
.success-message {
    background-color: #F0FDF4;
    border: 1px solid #DCFCE7;
    padding: 2rem;
    border-radius: 0.75rem;
    color: #15803D;
}

.icon-success {
    color: #16A34A;
    margin-bottom: 1rem;
}

.link-btn {
    background: none;
    border: none;
    color: #16A34A;
    text-decoration: underline;
    cursor: pointer;
    margin-top: 1rem;
    font-family: inherit;
    font-size: 0.875rem;
}

/* Footer */
footer {
    padding: 3rem 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: #A8A29E;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive */
@media (min-width: 768px) {
    h1 { font-size: 3.5rem; }
    .grid { grid-template-columns: repeat(3, 1fr); }
}