/* ==========================================================================
   Core — Variables, Reset, Typography, Utilities
   ========================================================================== */

:root {
    /* Brand — Bouma Waterwerken */
    --color-primary: #a21a28;      /* Bouma rood — hoofdkleur */
    --color-secondary: #f1c400;    /* Bouma goud — accent */
    --color-accent: #f1c400;       /* Alias voor goud */
    --color-dark: #1a1a1a;         /* Alleen footer & tekst */
    --color-light: #F5F5F5;        /* Neutraal lichtgrijs */
    --color-white: #FFFFFF;
    --color-text: #2D3748;
    --color-text-light: #718096;
    --color-border: #E2E8F0;

    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --section-padding: 6rem 0;
    --container-width: 1200px;
    --container-padding: 0 1.5rem;
    --gap: 2rem;

    /* Transitions */
    --transition: 0.3s ease;
    --transition-slow: 0.6s ease;

    /* Radius */
    --radius: 8px;
    --radius-lg: 16px;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; overflow-x: hidden; }

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-white);
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul, ol { list-style: none; }

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

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

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* Section */
.section { padding: var(--section-padding); overflow: hidden; }
.section--dark { background: var(--color-dark); color: var(--color-white); }
.section--dark h2,
.section--dark h3 { color: var(--color-white); }
.section--red { background: var(--color-primary); color: var(--color-white); }
.section--red h2,
.section--red h3 { color: var(--color-white); }
.section--red .section__label { color: var(--color-secondary); }
.section--red .section__subtitle { color: rgba(255,255,255,0.75); }
.section--light { background: var(--color-light); }

.section__label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.section__title {
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}
.section__title::after {
    content: '';
    display: block;
    width: 72px;
    height: 16px;
    margin-top: 0.75rem;
    background-image: url("data:image/svg+xml,%3Csvg width='72' height='16' viewBox='0 0 72 16' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,3 C6,0 12,0 18,3 C24,6 30,6 36,3 C42,0 48,0 54,3 C60,6 66,6 72,3' stroke='%23f1c400' stroke-width='2.5' fill='none' stroke-linecap='round'/%3E%3Cpath d='M0,11 C6,8 12,8 18,11 C24,14 30,14 36,11 C42,8 48,8 54,11 C60,14 66,14 72,11' stroke='%23f1c400' stroke-width='2.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* Bouma wave watermark — subtiele dubbele golf als achtergrond */
.bww-wave-bg {
    position: relative;
}
.bww-wave-bg::before {
    content: '';
    position: absolute;
    right: -40px;
    bottom: -20px;
    width: 320px;
    height: 80px;
    background-image: url("data:image/svg+xml,%3Csvg width='320' height='80' viewBox='0 0 320 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,25 C26,5 53,5 80,25 C107,45 133,45 160,25 C187,5 213,5 240,25 C267,45 293,45 320,25' stroke='%23f1c400' stroke-width='4' fill='none' stroke-linecap='round'/%3E%3Cpath d='M0,50 C26,30 53,30 80,50 C107,70 133,70 160,50 C187,30 213,30 240,50 C267,70 293,70 320,50' stroke='%23f1c400' stroke-width='4' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.06;
    pointer-events: none;
    z-index: 0;
}
/* Op rode achtergrond iets zichtbaarder */
.section--red .bww-wave-bg::before,
.bww-wave-bg--red::before {
    opacity: 0.1;
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 640px;
    line-height: 1.7;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}
.btn--primary:hover {
    background: #8a1522;
    border-color: #8a1522;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(162, 26, 40, 0.35);
}

.btn--gold {
    background: var(--color-secondary);
    color: var(--color-dark);
    border-color: var(--color-secondary);
    font-weight: 700;
}
.btn--gold:hover {
    background: #d9b000;
    border-color: #d9b000;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(241, 196, 0, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255,255,255,0.4);
}
.btn--outline:hover {
    background: var(--color-secondary);
    color: var(--color-dark);
    border-color: var(--color-secondary);
}

.btn--dark {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}
.btn--dark:hover {
    background: #8a1522;
    border-color: #8a1522;
    transform: translateY(-2px);
}

/* Reveal animation — alleen als JS actief is */
.js-ready .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.js-ready .reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Wave separator — animated */
.wave-separator {
    position: relative;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    height: 60px;
    margin-top: -30px;
    margin-bottom: -1px;
    z-index: 2;
    pointer-events: none;
}
.wave-separator .wave-svg {
    display: block;
    width: 200%;
    height: 100%;
    animation: waveFlow 8s linear infinite;
}
@keyframes waveFlow {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.wave-separator--flip .wave-svg { animation: waveFlowFlip 8s linear infinite; }
@keyframes waveFlowFlip {
    0%   { transform: scaleY(-1) translateX(0); }
    100% { transform: scaleY(-1) translateX(-50%); }
}
.wave-separator--gold path { fill: var(--color-accent); }
.wave-separator--dark path { fill: var(--color-dark); }
.wave-separator--light path { fill: var(--color-light); }
.wave-separator--white path { fill: var(--color-white); }
.wave-separator--red path { fill: var(--color-primary); }

/* Wave achtergrond = kleur sectie erboven */
.wave-bg--white { background: var(--color-white); }
.wave-bg--light { background: var(--color-light); }
.wave-bg--dark { background: var(--color-dark); }
.wave-bg--red { background: var(--color-primary); }
.wave-bg--gold { background: var(--color-accent); }

@media (max-width: 768px) {
    .wave-separator { height: 35px; }
}
@media (prefers-reduced-motion: reduce) {
    .wave-separator .wave-svg { animation: none; width: 100%; }
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --section-padding: 4rem 0;
        --gap: 1.25rem;
    }
}