/* =============================================
   ZWEMSCHOOL AMSTERDAM — MAIN STYLESHEET
   Kleurenschema: donkerblauw #1a3c6e, accent oranje #f47920
   ============================================= */

:root {
    --primary:       #1a3c6e;
    --primary-mid:   #1e4d8c;
    --primary-light: #eef3fb;
    --accent:        #f47920;
    --accent-dark:   #d4631a;
    --accent-light:  #fff4ec;
    --white:         #ffffff;
    --text-dark:     #1a1a2e;
    --text-med:      #4a5568;
    --text-light:    #718096;
    --bg-light:      #f8fafc;
    --bg-gray:       #edf2f7;
    --border:        #e2e8f0;
    --success:       #38a169;
    --radius-sm:     6px;
    --radius-md:     12px;
    --radius-lg:     20px;
    --shadow-sm:     0 1px 4px rgba(0,0,0,.07);
    --shadow-md:     0 4px 18px rgba(0,0,0,.10);
    --shadow-lg:     0 8px 32px rgba(0,0,0,.14);
    --font:          'Open Sans', sans-serif;
    --font-h:        'Nunito', sans-serif;
    --trans:         all .28s ease;
    --container:     1160px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);color:var(--text-dark);line-height:1.7;background:#fff;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:var(--trans)}
ul{list-style:none}
h1,h2,h3,h4,h5{font-family:var(--font-h);font-weight:800;line-height:1.25;color:var(--text-dark)}

.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:80px 0}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-family:var(--font-h);font-weight:700;font-size:.93rem;cursor:pointer;transition:var(--trans);border:2px solid transparent;white-space:nowrap;text-align:center}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(244,121,32,.35)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-outline-white{background:transparent;color:#fff;border-color:#fff}
.btn-outline-white:hover{background:#fff;color:var(--primary);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--primary);border-color:#fff}
.btn-white:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-large{padding:15px 36px;font-size:1.02rem}
.btn-block{display:flex;width:100%;justify-content:center;margin-top:18px}

/* ── TOP-BAR ── */
.topbar{background:var(--primary);color:rgba(255,255,255,.88);font-size:.82rem;padding:7px 0}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.topbar-left{display:flex;gap:18px;flex-wrap:wrap}
.topbar-left a,.topbar-right a{color:rgba(255,255,255,.85);display:flex;align-items:center;gap:5px}
.topbar-left a:hover,.topbar-right a:hover{color:#fff}
.topbar-right{display:flex;gap:10px}
.topbar-right a{width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.15);justify-content:center;font-size:.78rem}
.topbar-right a:hover{background:rgba(255,255,255,.28)}

/* ── HEADER ── */
.site-header{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:var(--shadow-md);transition:var(--trans)}
.site-header.scrolled{box-shadow:0 4px 22px rgba(0,0,0,.18)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 0;gap:16px}

/* Logo */
.logo{display:flex;align-items:center}
.logo img{height:52px;width:auto}

/* Nav */
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{display:flex;align-items:center;gap:5px;padding:9px 13px;font-family:var(--font-h);font-weight:700;font-size:.88rem;color:var(--text-dark);border-radius:var(--radius-sm);transition:var(--trans)}
.nav-link:hover,.nav-item.active .nav-link{color:var(--primary);background:var(--primary-light)}
.nav-link .fa-chevron-down{font-size:.66rem;transition:transform .3s}
.nav-cta{background:var(--accent)!important;color:#fff!important;border-radius:50px!important;padding:9px 20px!important}
.nav-cta:hover{background:var(--accent-dark)!important;transform:translateY(-2px);box-shadow:0 4px 14px rgba(244,121,32,.4)}
.nav-item{position:relative}
.dropdown-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:220px;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);border:1px solid var(--border);padding:8px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:var(--trans);z-index:100}
.dropdown-menu li a{display:block;padding:9px 14px;font-size:.86rem;font-family:var(--font-h);font-weight:600;color:var(--text-med);border-radius:var(--radius-sm);transition:var(--trans)}
.dropdown-menu li a:hover{background:var(--primary-light);color:var(--primary)}
.nav-item.dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-item.dropdown:hover .fa-chevron-down{transform:rotate(180deg)}
.hamburger{display:none;flex-direction:column;justify-content:space-between;width:28px;height:20px;background:none;border:none;cursor:pointer;padding:0}
.hamburger span{display:block;width:100%;height:2.5px;background:var(--text-dark);border-radius:2px;transition:var(--trans)}
.hamburger.active span:nth-child(1){transform:translateY(8.75px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-8.75px) rotate(-45deg)}

/* ── HERO ── */
.hero{position:relative;min-height:580px;overflow:hidden;display:flex;align-items:center;background:linear-gradient(135deg,#0d2547 0%,#1a3c6e 50%,#1e4d8c 100%)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center top;opacity:.22}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(13,37,71,.97) 0%,rgba(26,60,110,.75) 55%,rgba(26,60,110,.4) 100%)}
.hero-content{position:relative;z-index:2;color:#fff;max-width:620px;padding:60px 0}
.hero-badge{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.15);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.25);color:#fff;padding:5px 16px;border-radius:50px;font-size:.82rem;font-weight:600;margin-bottom:18px}
.hero-title{font-size:clamp(2rem,4.5vw,3.4rem);font-weight:900;color:#fff;margin-bottom:18px}
.hero-title span{color:var(--accent)}
.hero-sub{font-size:1.05rem;color:rgba(255,255,255,.88);margin-bottom:30px;max-width:500px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:30px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.2);padding-top:22px}
.hero-stat strong,.hero-stat .stat-num{display:block;font-size:1.9rem;font-family:var(--font-h);font-weight:900;color:var(--accent);line-height:1}
.hero-stat span:not(.stat-num),.hero-stat .stat-label{font-size:.8rem;color:rgba(255,255,255,.75)}

/* ── USP BAR ── */
.usp-bar{background:#fff;box-shadow:var(--shadow-md);position:relative;z-index:5}
.usp-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.usp-item{display:flex;align-items:center;gap:14px;padding:20px 24px;border-right:1px solid var(--border);transition:var(--trans)}
.usp-item:last-child{border-right:none}
.usp-item:hover{background:var(--primary-light)}
.usp-icon{font-size:1.6rem;color:var(--accent);flex-shrink:0}
.usp-item strong{display:block;font-family:var(--font-h);font-size:.9rem;color:var(--text-dark)}
.usp-item span{font-size:.78rem;color:var(--text-light)}

/* ── SECTION HEADER ── */
.section-header{text-align:center;max-width:680px;margin:0 auto 52px}
.section-tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:.76rem;font-weight:700;font-family:var(--font-h);text-transform:uppercase;letter-spacing:1.5px;padding:4px 14px;border-radius:50px;margin-bottom:12px}
.section-title{font-size:clamp(1.7rem,3.2vw,2.5rem);margin-bottom:14px}
.section-sub{font-size:.97rem;color:var(--text-med);max-width:560px;margin:0 auto}

/* ── LESSONS CARDS ── */
.lessons-section{background:var(--bg-light)}
.lessons-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.lesson-card{background:#fff;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--trans)}
.lesson-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--accent)}
.lesson-card-img{height:200px;overflow:hidden;background:linear-gradient(135deg,var(--primary),var(--primary-mid));position:relative;display:flex;align-items:center;justify-content:center}
.lesson-card-img i{font-size:4.5rem;color:rgba(255,255,255,.25)}
.lesson-card-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.lesson-card-body{padding:22px}
.lesson-card-body h3{font-size:1.12rem;margin-bottom:8px}
.lesson-card-body p{font-size:.87rem;color:var(--text-med);margin-bottom:14px}
.lesson-feats{display:flex;flex-direction:column;gap:5px;margin-bottom:14px}
.lesson-feats li{font-size:.83rem;color:var(--text-med);display:flex;align-items:center;gap:7px}
.lesson-feats li i{color:var(--success);font-size:.72rem}

/* ── WHY SECTION ── */
.why-section{background:#fff}
.why-inner{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:center}
.why-img-wrap{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:440px;background:linear-gradient(135deg,var(--primary),var(--primary-mid));box-shadow:var(--shadow-lg)}
.why-img-wrap img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.why-badge{position:absolute;bottom:28px;right:-18px;background:var(--accent);color:#fff;border-radius:var(--radius-md);padding:18px 22px;text-align:center;box-shadow:var(--shadow-lg)}
.why-badge-num{font-size:2.2rem;font-family:var(--font-h);font-weight:900;line-height:1}
.why-badge-label{font-size:.76rem;font-weight:600}
.why-features{display:flex;flex-direction:column;gap:20px;margin:28px 0}
.why-feat{display:flex;gap:16px;align-items:flex-start}
.why-feat-icon{width:44px;height:44px;background:var(--primary-light);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1rem;flex-shrink:0;transition:var(--trans)}
.why-feat:hover .why-feat-icon{background:var(--primary);color:#fff}
.why-feat h4{font-size:.92rem;margin-bottom:3px}
.why-feat p{font-size:.84rem;color:var(--text-med)}

/* ── STEPS SECTION ── */
.steps-section{background:linear-gradient(135deg,#eef3fb 0%,#e8f0fa 100%)}
.steps-grid{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:0;margin-bottom:42px}
.step-card{background:#fff;border-radius:var(--radius-md);padding:36px 24px;text-align:center;box-shadow:var(--shadow-md);border:1px solid var(--border);position:relative;transition:var(--trans)}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.step-num{font-size:3.2rem;font-family:var(--font-h);font-weight:900;color:var(--primary-light);position:absolute;top:12px;right:16px;line-height:1}
.step-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--primary),var(--primary-mid));border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.4rem;margin:0 auto 16px}
.step-card h3{font-size:1.08rem;margin-bottom:8px}
.step-card p{font-size:.84rem;color:var(--text-med)}
.step-arrow{font-size:1.4rem;color:var(--primary);opacity:.35;padding:0 18px}
.steps-cta{text-align:center}

/* ── REVIEWS ── */
.reviews-section{background:#fff}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:36px}
.review-card{background:var(--bg-light);border-radius:var(--radius-md);padding:26px;border:1px solid var(--border);transition:var(--trans);position:relative}
.review-card::before{content:'"';font-family:var(--font-h);font-size:5.5rem;color:var(--primary-light);position:absolute;top:-8px;left:16px;line-height:1}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.review-stars{color:var(--accent);display:flex;gap:3px;margin-bottom:12px;font-size:.9rem}
.review-text{font-size:.87rem;color:var(--text-med);font-style:italic;margin-bottom:18px;position:relative;z-index:1}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-mid));color:#fff;font-weight:700;font-family:var(--font-h);font-size:1.05rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.review-author strong{display:block;font-size:.88rem}
.review-author span{font-size:.77rem;color:var(--text-light)}
.score-box{display:flex;flex-direction:column;align-items:center;gap:6px;background:var(--primary);color:#fff;border-radius:var(--radius-md);padding:26px 48px;margin:0 auto;width:fit-content}
.score-num{font-size:3.4rem;font-family:var(--font-h);font-weight:900;line-height:1}
.score-stars{color:var(--accent);font-size:1.1rem;display:flex;gap:4px}
.score-label{font-size:.82rem;opacity:.8}

/* ── CTA BANNER ── */
.cta-banner{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-mid) 100%);padding:80px 0;position:relative;overflow:hidden;text-align:center;color:#fff}
.cta-banner h2{font-size:clamp(1.9rem,3.5vw,2.8rem);color:#fff;margin-bottom:14px}
.cta-banner p{font-size:1.05rem;color:rgba(255,255,255,.84);margin-bottom:32px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ── PAGE HERO ── */
.page-hero{background:linear-gradient(110deg,var(--primary) 0%,var(--primary-mid) 60%,#2563a8 100%);padding:70px 0 60px;color:#fff;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(255,255,255,.07) 0%,transparent 70%)}
.page-hero-inner{position:relative;z-index:2}
.page-hero h1{font-size:clamp(1.9rem,3.8vw,3rem);color:#fff;margin-bottom:12px}
.page-hero p{font-size:1.05rem;color:rgba(255,255,255,.84);max-width:580px;margin:0 auto 16px}
.breadcrumb{display:flex;align-items:center;gap:7px;justify-content:center;font-size:.83rem;color:rgba(255,255,255,.65);margin-bottom:16px}
.breadcrumb a{color:rgba(255,255,255,.65)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}

/* ── FOOTER ── */
.footer{background:var(--primary);color:rgba(255,255,255,.82)}
.footer-top{padding:60px 0 44px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:36px}
.footer-logo img{height:48px;width:auto;margin-bottom:14px;filter:brightness(0) invert(1)}
.footer-about p{font-size:.85rem;line-height:1.75;margin-bottom:18px;color:rgba(255,255,255,.72)}
.footer-social{display:flex;gap:9px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.8);font-size:.86rem;transition:var(--trans)}
.footer-social a:hover{background:var(--accent);color:#fff}
.footer-col h4{font-size:.95rem;font-family:var(--font-h);font-weight:700;color:#fff;margin-bottom:18px;padding-bottom:8px;border-bottom:2px solid var(--accent);display:inline-block}
.footer-links li{margin-bottom:8px}
.footer-links a{font-size:.85rem;color:rgba(255,255,255,.68);display:flex;align-items:center;gap:7px;transition:var(--trans)}
.footer-links a:hover{color:#fff;gap:10px}
.footer-links a .fa-chevron-right{font-size:.62rem;color:var(--accent)}
.footer-contact-list{display:flex;flex-direction:column;gap:12px}
.footer-contact-list li{display:flex;align-items:flex-start;gap:10px;font-size:.85rem}
.footer-contact-list i{color:var(--accent);width:16px;text-align:center;margin-top:3px;flex-shrink:0}
.footer-contact-list a{color:rgba(255,255,255,.68)}
.footer-contact-list a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:.82rem;color:rgba(255,255,255,.45)}
.footer-bottom-links{display:flex;gap:18px}
.footer-bottom-links a{color:rgba(255,255,255,.45)}
.footer-bottom-links a:hover{color:#fff}

/* ── SCROLL TOP ── */
.scroll-top{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--accent);color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);z-index:999;opacity:0;visibility:hidden;transform:translateY(10px);transition:var(--trans)}
.scroll-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-top:hover{background:var(--accent-dark);transform:translateY(-3px)}

/* ── FORM ── */
.form-group{margin-bottom:18px}
.form-label{display:block;font-size:.88rem;font-weight:700;font-family:var(--font-h);color:var(--text-dark);margin-bottom:5px}
.form-label .req{color:red;margin-left:2px}
.form-control{width:100%;padding:11px 15px;border:2px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font);font-size:.93rem;color:var(--text-dark);background:#fff;transition:var(--trans)}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,60,110,.1)}
select.form-control{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%234a5568' d='M8 11L2 5h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;background-size:13px;padding-right:38px}
textarea.form-control{resize:vertical;min-height:110px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-check{display:flex;align-items:flex-start;gap:9px;cursor:pointer;font-size:.85rem;color:var(--text-med)}
.form-check input{width:17px;height:17px;margin-top:2px;cursor:pointer;flex-shrink:0;accent-color:var(--primary)}
.form-check a{color:var(--primary);text-decoration:underline}
.alert{padding:13px 16px;border-radius:var(--radius-sm);font-size:.88rem;margin-bottom:18px;display:flex;align-items:center;gap:9px}
.alert-success{background:#f0fff4;border:1px solid #c6f6d5;color:#276749}
.alert-error{background:#fff5f5;border:1px solid #fed7d7;color:#c53030}

/* ── UTILITY ── */
.text-center{text-align:center}
.text-primary{color:var(--primary)}
.text-accent{color:var(--accent)}
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.hidden{display:none!important}
.read-more{font-size:.86rem;font-weight:700;font-family:var(--font-h);color:var(--primary);display:inline-flex;align-items:center;gap:5px}
.read-more:hover{color:var(--accent);gap:9px}

/* ── EMBED WRAPPER ── */
.embed-wrap{border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md);background:var(--bg-light);min-height:600px}
.embed-wrap iframe{display:block;width:100%;min-height:600px;border:none}

/* ── INFO BOX ── */
.info-box{display:flex;gap:14px;align-items:flex-start;background:var(--primary-light);border:1px solid #bfdbfe;border-radius:var(--radius-sm);padding:16px 18px;margin:20px 0}
.info-box i{color:var(--primary);font-size:1.1rem;flex-shrink:0;margin-top:2px}
.info-box strong{display:block;font-size:.88rem;margin-bottom:3px}
.info-box p{font-size:.83rem;color:var(--text-med)}

/* ── RESPONSIVE ── */
@media(max-width:1024px){
    .lessons-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .why-inner{gap:36px}
    .usp-grid{grid-template-columns:repeat(2,1fr)}
    .usp-item:nth-child(2){border-right:none}
    .usp-item:nth-child(3),.usp-item:nth-child(4){border-top:1px solid var(--border)}
}
@media(max-width:768px){
    .section{padding:54px 0}
    .topbar-left a:last-child{display:none}
    .hamburger{display:flex}
    .nav{position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:var(--shadow-lg);padding:0 16px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .3s ease}
    .nav.open{max-height:640px;padding:14px 16px}
    .nav-list{flex-direction:column;gap:2px}
    .nav-link{padding:11px 14px;border-radius:var(--radius-sm)}
    .dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;background:var(--bg-light);max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 0 0 14px}
    .nav-item.dropdown.open .dropdown-menu{max-height:280px}
    .hero{min-height:480px}
    .hero-stats{display:none}
    .hero-btns{flex-direction:column;align-items:flex-start}
    .why-inner{grid-template-columns:1fr}
    .why-img-wrap{min-height:280px}
    .why-badge{right:18px}
    .steps-grid{grid-template-columns:1fr}
    .step-arrow{text-align:center;transform:rotate(90deg);padding:8px 0}
    .reviews-grid{grid-template-columns:1fr}
    .form-row{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom-inner{flex-direction:column;text-align:center}
}
@media(max-width:480px){
    .usp-grid{grid-template-columns:1fr}
    .usp-item{border-right:none;border-bottom:1px solid var(--border)}
    .lessons-grid{grid-template-columns:1fr}
    .hero-title{font-size:1.9rem}
    .cta-btns{flex-direction:column;align-items:center}
}