/* ─── ONDA ATLÂNTICA — MAIN CSS ─────────────────────────────────────────── */
:root {
    --ocean:      #003F6B;
    --ocean-mid:  #005A9E;
    --sea:        #0077B6;
    --wave:       #00B4D8;
    --wave-dim:   rgba(0,180,216,0.15);
    --sky:        #90E0EF;
    --sand:       #F4E0C0;
    --sand-mid:   #EDD5A8;
    --coral:      #FF6B35;
    --coral-mid:  #E55A25;
    --coral-dim:  rgba(255,107,53,0.15);
    --foam:       #F0FAFE;
    --white:      #FFFFFF;
    --slate:      #2C3E50;
    --slate-mid:  rgba(44,62,80,0.55);
    --border:     rgba(0,180,216,0.2);
    --border-sand: rgba(244,224,192,0.3);
    --shadow:     0 4px 24px rgba(0,63,107,0.12);
    --shadow-lg:  0 16px 48px rgba(0,63,107,0.18);
    --font-head:  'Barlow Condensed', system-ui, sans-serif;
    --font-body:  'Nunito', system-ui, sans-serif;
    --max-w:      1200px;
    --radius:     12px;
    --radius-lg:  24px;
    --header-h:   72px;
    --ease:       cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── RESET ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
    font-family: var(--font-body);
    background: var(--foam);
    color: var(--slate);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: none; cursor: pointer; font: inherit; }

/* ─── PRELOADER ───────────────────────────────────────────────────────────── */
#preloader {
    position: fixed; inset: 0; z-index: 9999;
    background: linear-gradient(180deg, var(--ocean) 0%, var(--sea) 60%, var(--wave) 100%);
    display: flex; flex-direction: column;
    align-items: center; justify-content: flex-end;
    overflow: hidden;
    transition: opacity 0.6s var(--ease);
}
#preloader.is-hidden { opacity: 0; pointer-events: none; }
.preloader__ocean {
    position: absolute; bottom: 0; left: 0; right: 0; height: 200px;
}
.preloader__wave {
    position: absolute; bottom: 0; left: -100%; right: -100%;
    height: 100px; border-radius: 50%;
    background: rgba(255,255,255,0.12);
    animation: waveRise 2.5s ease-in-out infinite;
}
.preloader__wave--1 { animation-duration: 2.2s; }
.preloader__wave--2 { animation-duration: 2.8s; animation-delay: -0.8s; background: rgba(255,255,255,0.08); }
.preloader__wave--3 { animation-duration: 3.2s; animation-delay: -1.5s; background: rgba(255,255,255,0.05); }
@keyframes waveRise {
    0%, 100% { transform: translateX(0) scaleY(1); }
    50%       { transform: translateX(10%) scaleY(1.15); }
}
.preloader__content {
    position: relative; z-index: 1; text-align: center;
    padding-bottom: 25vh;
    display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
}
.preloader__icon { font-size: 3.5rem; animation: surferBob 1.2s ease-in-out infinite alternate; }
@keyframes surferBob {
    from { transform: translateY(0); }
    to   { transform: translateY(-10px); }
}
.preloader__name { font-family: var(--font-head); font-size: 2rem; font-weight: 800; color: white; letter-spacing: 0.05em; }
.preloader__sub  { font-size: 0.8rem; color: rgba(255,255,255,0.6); letter-spacing: 0.1em; }

/* ─── HEADER ─────────────────────────────────────────────────────────────── */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 900;
    height: var(--header-h);
    background: rgba(255,255,255,0.93);
    backdrop-filter: blur(16px);
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.is-scrolled { border-color: var(--wave); box-shadow: var(--shadow); }

.header__inner {
    max-width: var(--max-w); margin: 0 auto; padding: 0 2rem;
    height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}
.header__logo { display: flex; align-items: center; gap: 0.7rem; }
.header__logo-wave {
    font-size: 1.8rem; color: var(--wave); line-height: 1;
    font-family: var(--font-head);
    animation: waveSway 3s ease-in-out infinite;
}
@keyframes waveSway {
    0%, 100% { transform: rotate(-5deg); }
    50%       { transform: rotate(5deg); }
}
.header__logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.header__logo-name { font-family: var(--font-head); font-size: 1.15rem; font-weight: 800; color: var(--ocean); letter-spacing: 0.02em; }
.header__logo-sub  { font-size: 0.62rem; letter-spacing: 0.08em; color: var(--wave); text-transform: uppercase; }

.header__nav { display: flex; align-items: center; gap: 0.25rem; }
.header__links { display: flex; align-items: center; gap: 0.1rem; }
.header__link {
    font-family: var(--font-head); font-size: 0.95rem; font-weight: 600;
    letter-spacing: 0.03em; color: var(--slate);
    padding: 0.5rem 0.9rem; border-radius: var(--radius);
    transition: color 0.2s, background 0.2s;
}
.header__link:hover { color: var(--sea); background: var(--wave-dim); }
.header__link--cta {
    background: var(--coral); color: white;
    padding: 0.5rem 1.25rem; border-radius: 50px;
    font-weight: 700;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.header__link--cta:hover { background: var(--coral-mid); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,107,53,0.35); }

.header__burger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.header__burger span { display: block; width: 22px; height: 2.5px; background: var(--ocean); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }

/* ─── MOBILE MENU ─────────────────────────────────────────────────────────── */
.mobile-menu {
    position: fixed; inset: 0; z-index: 950;
    background: var(--ocean);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 0.25rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
}
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu__close {
    position: absolute; top: 1.5rem; right: 1.5rem;
    font-size: 2rem; color: var(--wave); line-height: 1; padding: 0.5rem;
}
.mobile-menu__link {
    display: block; font-family: var(--font-head);
    font-size: 2rem; font-weight: 700; color: rgba(255,255,255,0.8);
    padding: 0.4rem 1rem; letter-spacing: 0.04em;
    transition: color 0.2s;
}
.mobile-menu__link:hover { color: var(--sky); }
.mobile-menu__link--cta { color: var(--coral); }
.mobile-menu__tagline {
    position: absolute; bottom: 2rem;
    font-size: 1rem; color: rgba(144,224,239,0.5);
}

/* ─── LAYOUT ─────────────────────────────────────────────────────────────── */
#main { padding-top: var(--header-h); }
.section { padding: 6rem 1.5rem; }
.section--alt { background: var(--sand); }
.section--ocean { background: var(--ocean); color: white; }
.section__inner { max-width: var(--max-w); margin: 0 auto; }
.text-center { text-align: center; }

.section__eyebrow {
    font-family: var(--font-head); font-size: 0.78rem; font-weight: 700;
    letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--coral); margin-bottom: 0.75rem;
}
.section__title {
    font-family: var(--font-head); font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 800; line-height: 1.1; letter-spacing: 0.02em;
    color: var(--ocean); margin-bottom: 1rem;
}
.section--alt .section__title { color: var(--ocean); }
.section--ocean .section__title { color: white; }
.section__intro {
    font-size: 1.05rem; color: var(--slate-mid);
    max-width: 580px; margin: 0 auto 3rem; line-height: 1.7;
}
.section--ocean .section__intro { color: rgba(255,255,255,0.65); }

/* ─── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-family: var(--font-head); font-size: 1rem; font-weight: 700;
    letter-spacing: 0.04em; border-radius: 50px;
    padding: 0.75rem 1.75rem;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn--coral { background: var(--coral); color: white; }
.btn--coral:hover { background: var(--coral-mid); box-shadow: 0 8px 24px rgba(255,107,53,0.4); }
.btn--ocean { background: var(--ocean); color: white; }
.btn--ocean:hover { background: var(--ocean-mid); }
.btn--outline { border: 2px solid white; color: white; }
.btn--outline:hover { background: rgba(255,255,255,0.15); }
.btn--small { font-size: 0.85rem; padding: 0.5rem 1.25rem; }

/* ─── [data-animate] ─────────────────────────────────────────────────────── */
[data-animate] { opacity: 0; transform: translateY(24px); }

/* ─── HERO ────────────────────────────────────────────────────────────────── */
.hero {
    position: relative; min-height: 90vh;
    display: flex; align-items: center;
    background: var(--ocean) center/cover no-repeat;
    overflow: hidden;
}
.hero__overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0,63,107,0.85) 0%, rgba(0,90,158,0.6) 50%, rgba(0,63,107,0.4) 100%);
}
/* Wave shape at bottom */
.hero::after {
    content: ''; position: absolute;
    bottom: -2px; left: 0; right: 0; height: 80px;
    background: var(--foam);
    clip-path: ellipse(55% 100% at 50% 100%);
}
.hero__inner {
    position: relative; z-index: 1;
    max-width: var(--max-w); margin: 0 auto; padding: 4rem 2rem;
}
.hero__eyebrow {
    display: inline-flex; align-items: center; gap: 0.6rem;
    font-family: var(--font-head); font-size: 0.9rem; font-weight: 700;
    letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--sky); margin-bottom: 1.25rem;
}
.hero__eyebrow-dot { width: 8px; height: 8px; background: var(--coral); border-radius: 50%; animation: pulseDot 1.5s ease-in-out infinite; }
@keyframes pulseDot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.6; }
}
.hero__title {
    font-family: var(--font-head); font-size: clamp(2.8rem, 7vw, 6rem);
    font-weight: 900; line-height: 0.95; letter-spacing: 0.02em;
    color: white; margin-bottom: 1.25rem; text-transform: uppercase;
}
.hero__title span { color: var(--coral); }
.hero__subtitle {
    font-size: 1.15rem; color: rgba(255,255,255,0.75);
    max-width: 540px; line-height: 1.7; margin-bottom: 2.5rem;
}
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ─── LESSON CARDS ────────────────────────────────────────────────────────── */
.lessons-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 0.5rem; }
.lesson-card {
    background: white; border-radius: var(--radius-lg);
    overflow: hidden; border: 2px solid transparent;
    box-shadow: var(--shadow);
    transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.lesson-card:hover { border-color: var(--wave); transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.lesson-card__img { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.lesson-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s var(--ease); }
.lesson-card:hover .lesson-card__img img { transform: scale(1.05); }
.lesson-card__badge {
    position: absolute; top: 0.75rem; left: 0.75rem;
    font-family: var(--font-head); font-size: 0.75rem; font-weight: 700;
    letter-spacing: 0.08em; text-transform: uppercase;
    padding: 0.3rem 0.75rem; border-radius: 50px; color: white;
}
.lesson-card__badge--iniciante  { background: var(--sea); }
.lesson-card__badge--intermedio { background: var(--ocean-mid); }
.lesson-card__badge--avancado   { background: var(--ocean); }
.lesson-card__badge--kids       { background: var(--coral); }
.lesson-card__badge--privada    { background: #8B5CF6; }
.lesson-card__body { padding: 1.5rem; }
.lesson-card__title { font-family: var(--font-head); font-size: 1.2rem; font-weight: 700; color: var(--ocean); margin-bottom: 0.5rem; letter-spacing: 0.02em; }
.lesson-card__meta { display: flex; gap: 1rem; margin-bottom: 0.75rem; }
.lesson-card__duration, .lesson-card__price {
    font-size: 0.82rem; font-weight: 600; color: var(--slate-mid);
    display: flex; align-items: center; gap: 0.3rem;
}
.lesson-card__price { color: var(--coral); font-weight: 700; }
.lesson-card__desc { font-size: 0.88rem; color: var(--slate-mid); line-height: 1.6; margin-bottom: 1rem; }

/* ─── SURF CAMPS ──────────────────────────────────────────────────────────── */
.camps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.camp-card {
    background: white; border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow); transition: transform 0.3s, box-shadow 0.3s;
}
.camp-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.camp-card__img { aspect-ratio: 3/2; overflow: hidden; }
.camp-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s var(--ease); }
.camp-card:hover .camp-card__img img { transform: scale(1.05); }
.camp-card__body { padding: 1.5rem; }
.camp-card__duration {
    font-family: var(--font-head); font-size: 0.75rem; font-weight: 700;
    letter-spacing: 0.1em; text-transform: uppercase; color: var(--coral);
    margin-bottom: 0.5rem;
}
.camp-card__title { font-family: var(--font-head); font-size: 1.3rem; font-weight: 800; color: var(--ocean); margin-bottom: 0.5rem; letter-spacing: 0.02em; }
.camp-card__desc { font-size: 0.9rem; color: var(--slate-mid); line-height: 1.65; margin-bottom: 1.25rem; }
.camp-card__price { font-family: var(--font-head); font-size: 1.5rem; font-weight: 800; color: var(--coral); }
.camp-card__price span { font-size: 0.85rem; font-weight: 500; color: var(--slate-mid); }

/* ─── ALUGUER ─────────────────────────────────────────────────────────────── */
.rental-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.rental-item {
    background: white; border-radius: var(--radius-lg); padding: 1.5rem;
    text-align: center; border: 2px solid transparent;
    box-shadow: var(--shadow);
    transition: border-color 0.25s, transform 0.25s;
}
.rental-item:hover { border-color: var(--wave); transform: translateY(-3px); }
.rental-item__icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.rental-item__name { font-family: var(--font-head); font-size: 1.1rem; font-weight: 700; color: var(--ocean); margin-bottom: 0.3rem; letter-spacing: 0.02em; }
.rental-item__price { font-size: 0.9rem; color: var(--coral); font-weight: 600; }
.rental-item__per { font-size: 0.78rem; color: var(--slate-mid); }

/* ─── ABOUT / INSTRUCTORS ─────────────────────────────────────────────────── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.about-img img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.about-body { font-size: 1rem; line-height: 1.8; color: var(--slate-mid); margin-top: 1rem; }
.about-stats { display: flex; gap: 2.5rem; flex-wrap: wrap; margin-top: 2rem; }
.about-stat__num { font-family: var(--font-head); font-size: 2.2rem; font-weight: 900; color: var(--coral); line-height: 1; }
.about-stat__label { font-size: 0.82rem; color: var(--slate-mid); }

.instructors-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.instructor-card { text-align: center; }
.instructor-card__photo { width: 100px; height: 100px; border-radius: 50%; overflow: hidden; margin: 0 auto 1rem; border: 3px solid var(--wave); }
.instructor-card__photo img { width: 100%; height: 100%; object-fit: cover; }
.instructor-card__name { font-family: var(--font-head); font-size: 1.1rem; font-weight: 700; color: var(--ocean); }
.instructor-card__level { font-size: 0.8rem; color: var(--coral); font-weight: 600; margin-top: 0.2rem; }
.instructor-card__bio { font-size: 0.85rem; color: var(--slate-mid); line-height: 1.6; margin-top: 0.5rem; }

/* ─── RESERVAS / FORM ─────────────────────────────────────────────────────── */
.reservas-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; align-items: start; }
.reservas-info { display: flex; flex-direction: column; gap: 1.5rem; }
.reservas-info__item strong { display: block; font-family: var(--font-head); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--coral); margin-bottom: 0.3rem; }
.reservas-info__item a, .reservas-info__item span { font-size: 1rem; color: rgba(255,255,255,0.8); }
.reservas-info__item a:hover { color: var(--sky); }

/* ─── FOOTER ──────────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--ocean); color: rgba(255,255,255,0.4);
    padding: 2rem 1.5rem; text-align: center; font-size: 0.82rem;
}
.site-footer a { color: var(--coral); }

/* ─── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .header__links { display: none; }
    .header__burger { display: flex; }
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .reservas-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 600px) {
    .section { padding: 4rem 1rem; }
    .hero__inner { padding: 3rem 1.25rem; }
    .lessons-grid, .camps-grid { grid-template-columns: 1fr; }
    [data-animate] { opacity: 1; transform: none; }
}