/* =============================================
   AlbReef – Aquarienservice Alb-Donau
   Colour palette: deep ocean blues + coral accents
   ============================================= */

:root {
    --deep:    #050e1f;
    --ocean:   #0a1628;
    --mid:     #0d2444;
    --blue:    #0b4f8a;
    --teal:    #0e7c8c;
    --aqua:    #00bcd4;
    --coral:   #ff6b6b;
    --coral2:  #ff8e53;
    --sand:    #e8f4f8;
    --white:   #ffffff;
    --text:    #cbd5e1;
    --radius:  12px;
    --shadow:  0 8px 32px rgba(0,0,0,0.4);
    --trans:   all 0.3s ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Poppins', sans-serif;
    background: var(--ocean);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}
img { max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }

/* ── Navbar ── */
.navbar {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    padding: 16px 0;
    transition: var(--trans);
}
.navbar.scrolled {
    background: rgba(5, 14, 31, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.5);
    padding: 10px 0;
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 1.8rem; }
.logo-text { font-size: 1.4rem; font-weight: 700; color: var(--aqua); }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
    font-size: 0.95rem; font-weight: 500; color: var(--text);
    transition: var(--trans); position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--aqua);
    transition: var(--trans);
}
.nav-links a:hover { color: var(--aqua); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
    display: block; width: 26px; height: 2px;
    background: var(--aqua); border-radius: 2px; transition: var(--trans);
}

/* ── Hero ── */
.hero {
    position: relative; min-height: 100vh;
    background: radial-gradient(ellipse at 60% 40%, #0d3a6e 0%, #050e1f 60%),
                url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230e7c8c' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    display: flex; align-items: center; overflow: hidden;
}
.hero-content {
    position: relative; z-index: 2;
    max-width: 700px; margin: 0 auto; padding: 120px 24px 80px;
    text-align: center;
}
.hero-tagline {
    display: inline-block; padding: 6px 18px;
    background: rgba(14,124,140,0.25); border: 1px solid rgba(0,188,212,0.3);
    border-radius: 40px; font-size: 0.85rem; color: var(--aqua);
    margin-bottom: 24px; letter-spacing: 1px; text-transform: uppercase;
}
.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700; line-height: 1.1;
    background: linear-gradient(135deg, var(--white) 30%, var(--aqua) 70%, var(--coral) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: 16px;
}
.hero-subtitle {
    font-size: 1.25rem; color: var(--aqua); font-weight: 500; margin-bottom: 16px;
}
.hero-desc {
    font-size: 1.05rem; color: var(--text); max-width: 520px; margin: 0 auto 40px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-wave {
    position: absolute; bottom: 0; left: 0; width: 100%;
    line-height: 0;
}
.hero-wave svg { display: block; width: 100%; height: 80px; }

/* Bubbles */
.bubbles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.bubble {
    position: absolute; bottom: -60px;
    background: rgba(0,188,212,0.12); border: 1px solid rgba(0,188,212,0.2);
    border-radius: 50%; animation: rise linear infinite;
}
.bubble:nth-child(1)  { width:20px; height:20px; left:10%; animation-duration:8s;  animation-delay:0s;  }
.bubble:nth-child(2)  { width:12px; height:12px; left:20%; animation-duration:10s; animation-delay:2s;  }
.bubble:nth-child(3)  { width:28px; height:28px; left:35%; animation-duration:7s;  animation-delay:1s;  }
.bubble:nth-child(4)  { width:16px; height:16px; left:50%; animation-duration:12s; animation-delay:4s;  }
.bubble:nth-child(5)  { width:22px; height:22px; left:60%; animation-duration:9s;  animation-delay:0.5s;}
.bubble:nth-child(6)  { width:10px; height:10px; left:70%; animation-duration:11s; animation-delay:3s;  }
.bubble:nth-child(7)  { width:18px; height:18px; left:80%; animation-duration:8s;  animation-delay:1.5s;}
.bubble:nth-child(8)  { width:24px; height:24px; left:88%; animation-duration:10s; animation-delay:5s;  }
.bubble:nth-child(9)  { width:14px; height:14px; left:5%;  animation-duration:13s; animation-delay:2.5s;}
@keyframes rise {
    0%   { transform: translateY(0) translateX(0); opacity: 0; }
    10%  { opacity: 1; }
    90%  { opacity: 0.6; }
    100% { transform: translateY(-110vh) translateX(30px); opacity: 0; }
}

/* ── Buttons ── */
.btn {
    display: inline-block; padding: 14px 32px;
    border-radius: 50px; font-weight: 600; font-size: 0.95rem;
    cursor: pointer; transition: var(--trans); border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--teal), var(--aqua));
    color: var(--deep); box-shadow: 0 4px 20px rgba(0,188,212,0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0,188,212,0.5);
}
.btn-outline {
    background: transparent;
    border: 2px solid rgba(0,188,212,0.6);
    color: var(--aqua);
}
.btn-outline:hover {
    background: rgba(0,188,212,0.1);
    border-color: var(--aqua);
    transform: translateY(-2px);
}
.btn-full { width: 100%; text-align: center; }

/* ── Stats ── */
.stats {
    background: var(--ocean);
    padding: 48px 0;
    border-top: 1px solid rgba(0,188,212,0.1);
    border-bottom: 1px solid rgba(0,188,212,0.1);
}
.stats .container {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 24px; text-align: center;
}
.stat-item { padding: 16px; }
.stat-number {
    display: block; font-size: 2.8rem; font-weight: 700;
    background: linear-gradient(135deg, var(--aqua), var(--coral));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}
.stat-item > span:nth-child(2) {
    font-size: 2rem; font-weight: 700; color: var(--coral);
}
.stat-label { display: block; font-size: 0.9rem; color: var(--text); margin-top: 4px; }

/* ── Section Header ── */
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
    display: inline-block; padding: 6px 18px;
    background: rgba(14,124,140,0.2); border: 1px solid rgba(0,188,212,0.25);
    border-radius: 40px; font-size: 0.8rem; color: var(--aqua);
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px;
}
.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700;
    color: var(--white); margin-bottom: 16px;
}
.section-header p { color: var(--text); max-width: 560px; margin: 0 auto; font-size: 1.05rem; }

/* ── Services ── */
.services { background: var(--deep); }
.services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    position: relative;
    background: linear-gradient(135deg, rgba(11,79,138,0.3), rgba(14,124,140,0.15));
    border: 1px solid rgba(0,188,212,0.15);
    border-radius: var(--radius); padding: 36px 28px;
    transition: var(--trans);
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0,188,212,0.4);
    box-shadow: 0 12px 40px rgba(0,188,212,0.15);
}
.service-card.featured {
    background: linear-gradient(135deg, rgba(0,188,212,0.2), rgba(14,124,140,0.25));
    border-color: rgba(0,188,212,0.4);
}
.service-icon { font-size: 2.5rem; margin-bottom: 20px; display: block; }
.service-card h3 { font-size: 1.15rem; font-weight: 600; color: var(--white); margin-bottom: 12px; }
.service-card p { font-size: 0.93rem; color: var(--text); line-height: 1.7; }
.badge {
    position: absolute; top: 16px; right: 16px;
    background: linear-gradient(135deg, var(--coral), var(--coral2));
    color: var(--white); font-size: 0.75rem; font-weight: 600;
    padding: 4px 12px; border-radius: 20px;
}

/* ── About ── */
.about { background: var(--ocean); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-visual { display: flex; justify-content: center; }

/* Decorative tank */
.tank-frame {
    width: 300px; height: 340px;
    border: 3px solid rgba(0,188,212,0.4);
    border-radius: 16px; overflow: hidden;
    background: linear-gradient(180deg, #061525 0%, #0a2d55 40%, #0d4a7a 100%);
    position: relative;
    box-shadow: 0 0 60px rgba(0,188,212,0.2), inset 0 0 40px rgba(0,0,0,0.5);
}
.tank-water { position: relative; width: 100%; height: 100%; }
.coral, .fish { position: absolute; font-size: 2rem; }
.coral-1 { bottom: 10%; left: 10%; animation: sway 4s ease-in-out infinite; }
.coral-2 { bottom: 8%; left: 40%; font-size: 2.5rem; animation: sway 5s ease-in-out infinite 1s; }
.coral-3 { bottom: 12%; right: 10%; animation: sway 3.5s ease-in-out infinite 0.5s; }
.fish-1 { top: 25%; left: 15%; animation: swim 7s ease-in-out infinite; }
.fish-2 { top: 45%; right: 20%; animation: swim 9s ease-in-out infinite 2s reverse; }
.fish-3 { top: 60%; left: 30%; animation: swim 6s ease-in-out infinite 1s; }
@keyframes sway {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}
@keyframes swim {
    0%   { transform: translateX(0) scaleX(1); }
    45%  { transform: translateX(60px) scaleX(1); }
    50%  { transform: translateX(60px) scaleX(-1); }
    95%  { transform: translateX(0) scaleX(-1); }
    100% { transform: translateX(0) scaleX(1); }
}

.about-content .section-tag { margin-bottom: 16px; display: inline-block; }
.about-content h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700;
    color: var(--white); margin-bottom: 20px;
}
.about-content p { color: var(--text); margin-bottom: 16px; font-size: 1rem; }
.about-list { margin: 24px 0 32px; display: flex; flex-direction: column; gap: 10px; }
.about-list li { color: var(--sand); font-size: 0.95rem; }

/* ── Contact ── */
.contact { background: var(--deep); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 28px; padding-top: 8px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon { font-size: 1.6rem; flex-shrink: 0; }
.contact-item strong { display: block; color: var(--white); font-size: 0.95rem; margin-bottom: 2px; }
.contact-item span { color: var(--text); font-size: 0.9rem; }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input,
.contact-form textarea {
    width: 100%; padding: 14px 18px;
    background: rgba(11,79,138,0.2);
    border: 1px solid rgba(0,188,212,0.2);
    border-radius: var(--radius); color: var(--white);
    font-family: 'Poppins', sans-serif; font-size: 0.95rem;
    transition: var(--trans); outline: none;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #5a7a9a; }
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--aqua);
    background: rgba(0,188,212,0.08);
    box-shadow: 0 0 0 3px rgba(0,188,212,0.15);
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.form-note { text-align: center; font-size: 0.8rem; color: #5a7a9a; margin-top: -4px; }

/* ── Footer ── */
.footer {
    background: var(--deep);
    border-top: 1px solid rgba(0,188,212,0.1);
    padding: 48px 0 32px;
}
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 32px; text-align: center; }
.footer-logo { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.footer-logo .logo-icon { font-size: 2rem; }
.footer-logo .logo-text { font-size: 1.3rem; font-weight: 700; color: var(--aqua); }
.footer-logo p { font-size: 0.85rem; color: var(--text); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 24px; }
.footer-links a { font-size: 0.9rem; color: var(--text); transition: var(--trans); }
.footer-links a:hover { color: var(--aqua); }
.footer-copy { font-size: 0.82rem; color: #3a5a7a; }

/* ── Responsive ── */
@media (max-width: 900px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; }
    .about-visual { display: none; }
    .stats .container { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .services-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; background: rgba(5,14,31,0.98); padding: 24px;
        gap: 20px; border-bottom: 1px solid rgba(0,188,212,0.15); }
    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }
    .stats .container { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: center; }
}