/* ============================================================
   BIOCITY MONITORING — Landing Page
   Paleta: biocity.pt (teal escuro + aqua + navy)
   ============================================================ */

:root {
    --brand:       #1a6b7a;   /* teal principal biocity */
    --brand-mid:   #218fa0;   /* teal médio              */
    --brand-light: #3bbdd4;   /* teal claro / links      */
    --accent:      #00c4a8;   /* aqua / verde-teal       */
    --accent-dim:  rgba(0,196,168,.15);
    --dark-900:    #050f18;
    --dark-800:    #091927;
    --dark-700:    #0e2535;
    --dark-600:    #153040;
    --dark-500:    #1d4057;
    --text-base:   #cfe0ea;
    --text-muted:  #7fa0b2;
    --glass:       rgba(26,107,122,.12);
    --glass-border:rgba(59,189,212,.18);
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--dark-900);
    color: var(--text-base);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── NAVBAR ── */
.lp-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    display: flex; align-items: center; justify-content: space-between;
    padding: .85rem 2.5rem;
    background: rgba(5,15,24,.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(59,189,212,.08);
    transition: background .35s, box-shadow .35s;
}
.lp-nav.scrolled {
    background: rgba(5,15,24,.93);
    box-shadow: 0 2px 24px rgba(0,0,0,.45);
}

.lp-nav .brand {
    display: flex; align-items: center; gap: .7rem;
    font-size: 1rem; font-weight: 700;
    color: #fff; text-decoration: none;
}
.lp-nav .brand img {
    height: 38px;
    width: auto;
    object-fit: contain;
}
.lp-nav .brand span { opacity: .85; letter-spacing: .02em; }

.btn-nav {
    background: var(--brand);
    border: 1px solid var(--brand-mid);
    color: #fff; padding: .5rem 1.35rem;
    border-radius: 8px; font-size: .88rem; font-weight: 600;
    cursor: pointer; text-decoration: none; display: inline-flex;
    align-items: center; gap: .5rem;
    transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-nav:hover {
    background: var(--brand-mid);
    color: #fff; text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26,107,122,.5);
}

/* ── HERO ── */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center;
    padding: 8rem 1.5rem 5rem;
    position: relative; overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background:
        radial-gradient(ellipse 90% 65% at 50% -15%, rgba(26,107,122,.55) 0%, transparent 68%),
        radial-gradient(ellipse 45% 55% at 85% 75%, rgba(0,196,168,.14) 0%, transparent 60%),
        radial-gradient(ellipse 35% 40% at 10% 80%, rgba(33,143,160,.1) 0%, transparent 55%),
        var(--dark-900);
}

.hero-grid {
    position: absolute; inset: 0; z-index: 0;
    background-image:
        linear-gradient(rgba(59,189,212,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,189,212,.07) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 75% 65% at 50% 50%, black 0%, transparent 82%);
    -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 50%, black 0%, transparent 82%);
}

/* floating orbs */
.hero-orb {
    position: absolute; z-index: 0;
    border-radius: 50%; filter: blur(70px); pointer-events: none;
}
.hero-orb-1 {
    width: 380px; height: 380px;
    background: rgba(26,107,122,.25);
    top: 10%; left: -8%;
    animation: float-orb 9s ease-in-out infinite;
}
.hero-orb-2 {
    width: 280px; height: 280px;
    background: rgba(0,196,168,.12);
    bottom: 12%; right: 5%;
    animation: float-orb 12s ease-in-out infinite reverse;
}
@keyframes float-orb {
    0%, 100% { transform: translateY(0) scale(1); }
    50%       { transform: translateY(-30px) scale(1.06); }
}

.hero-badge {
    position: relative; z-index: 1;
    display: inline-flex; align-items: center; gap: .45rem;
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: 100px; padding: .35rem 1rem;
    font-size: .76rem; font-weight: 700; letter-spacing: .07em;
    color: var(--brand-light); text-transform: uppercase;
    margin-bottom: 1.8rem;
}
.hero-badge .dot {
    width: 7px; height: 7px;
    background: var(--accent); border-radius: 50%;
    animation: pulse-dot 2.2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: .4; transform: scale(1.4); }
}

.hero h1 {
    position: relative; z-index: 1;
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 800; line-height: 1.1;
    letter-spacing: -.025em; color: #fff;
    margin-bottom: 1.4rem;
}
.hero h1 .grad {
    background: linear-gradient(130deg, var(--brand-light) 0%, var(--accent) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .lead {
    position: relative; z-index: 1;
    font-size: clamp(.95rem, 1.8vw, 1.15rem);
    color: var(--text-muted); max-width: 540px;
    margin: 0 auto 2.5rem; line-height: 1.75;
}

.hero-actions {
    position: relative; z-index: 1;
    display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;
}

.btn-hero {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-mid) 100%);
    color: #fff; padding: .9rem 2.3rem;
    border-radius: 10px; font-size: 1rem; font-weight: 700; border: none;
    cursor: pointer; text-decoration: none;
    display: inline-flex; align-items: center; gap: .55rem;
    box-shadow: 0 8px 32px rgba(26,107,122,.55);
    transition: all .25s;
}
.btn-hero:hover {
    background: linear-gradient(135deg, var(--brand-mid) 0%, var(--brand-light) 100%);
    color: #fff; text-decoration: none;
    transform: translateY(-3px);
    box-shadow: 0 16px 44px rgba(26,107,122,.7);
}

/* ── STATS BAR ── */
.stats-bar {
    position: relative; z-index: 1;
    display: flex; justify-content: center;
    flex-wrap: wrap; gap: 3rem;
    margin-top: 4.5rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(59,189,212,.1);
    width: 100%; max-width: 800px;
}
.stat-item { text-align: center; }
.stat-num {
    font-size: 2.1rem; font-weight: 800; line-height: 1;
    background: linear-gradient(130deg, #ffffff 30%, var(--brand-light) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    font-size: .75rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: .08em; margin-top: .35rem;
}

/* ── SECTION WRAPPER ── */
.section { padding: 6rem 1.5rem; }
.section-inner { max-width: 1100px; margin: 0 auto; }

/* ── SECTION HEADER ── */
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-tag {
    display: inline-block;
    background: var(--glass); border: 1px solid var(--glass-border);
    color: var(--brand-light); padding: .28rem .9rem;
    border-radius: 100px; font-size: .73rem; font-weight: 700;
    letter-spacing: .07em; text-transform: uppercase; margin-bottom: .85rem;
}
.section-header h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800; color: #fff;
    letter-spacing: -.015em; line-height: 1.2; margin-bottom: .7rem;
}
.section-header p { color: var(--text-muted); font-size: .95rem; max-width: 480px; margin: 0 auto; line-height: 1.75; }

/* ── FEATURES ── */
.features-bg { background: var(--dark-900); }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.4rem;
}
.feat-card {
    background: var(--dark-800);
    border: 1px solid rgba(255,255,255,.06);
    border-radius: 16px; padding: 2rem 1.8rem;
    transition: transform .3s, border-color .3s, box-shadow .3s;
    position: relative; overflow: hidden;
}
.feat-card::after {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at 25% -10%, rgba(26,107,122,.18) 0%, transparent 55%);
    opacity: 0; transition: opacity .3s;
}
.feat-card:hover {
    transform: translateY(-6px);
    border-color: rgba(59,189,212,.3);
    box-shadow: 0 12px 40px rgba(26,107,122,.25);
}
.feat-card:hover::after { opacity: 1; }

.feat-icon {
    width: 50px; height: 50px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; margin-bottom: 1.2rem;
}
.feat-icon.elec  { background: rgba(26,107,122,.3);  color: var(--brand-light); }
.feat-icon.water { background: rgba(0,196,168,.2);   color: var(--accent); }
.feat-icon.gas   { background: rgba(255,178,53,.18); color: #ffb235; }
.feat-icon.leaf  { background: rgba(59,189,212,.15); color: var(--brand-light); }

.feat-card h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: .55rem; }
.feat-card p  { font-size: .86rem; color: var(--text-muted); line-height: 1.68; }

/* ── HOW IT WORKS ── */
.how-bg { background: var(--dark-800); }

.steps {
    display: flex; flex-wrap: wrap; justify-content: center;
    gap: 0; max-width: 960px; margin: 0 auto;
}
.step {
    flex: 1; min-width: 200px; max-width: 240px;
    text-align: center; padding: 1.5rem 1.2rem;
    position: relative;
}
.step:not(:last-child)::after {
    content: '';
    position: absolute; top: 2.6rem; right: 0;
    width: 50%; height: 1px;
    background: linear-gradient(90deg, var(--brand-mid) 0%, transparent 100%);
    opacity: .35;
}
.step-num {
    width: 52px; height: 52px; border-radius: 50%;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-mid) 100%);
    color: #fff; font-size: 1.1rem; font-weight: 800;
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
    box-shadow: 0 6px 24px rgba(26,107,122,.55);
}
.step h4 { font-size: .95rem; font-weight: 700; color: #fff; margin-bottom: .45rem; }
.step p  { font-size: .82rem; color: var(--text-muted); line-height: 1.65; }

/* ── BENEFITS ── */
.benefits-bg { background: var(--dark-900); }

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1.2rem;
}
.benefit-card {
    background: var(--dark-700);
    border: 1px solid rgba(255,255,255,.05);
    border-radius: 14px; padding: 1.6rem;
    text-align: center;
    transition: transform .25s, border-color .25s;
}
.benefit-card:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border);
}
.benefit-card .bc-icon { font-size: 1.9rem; margin-bottom: .9rem; }
.benefit-card h4 { font-size: .92rem; font-weight: 700; color: #fff; margin-bottom: .4rem; }
.benefit-card p  { font-size: .8rem; color: var(--text-muted); line-height: 1.65; }

/* ── CTA BLOCK ── */
.cta-bg {
    background: linear-gradient(135deg, var(--dark-700) 0%, var(--dark-800) 100%);
    position: relative; overflow: hidden;
}
.cta-bg::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 65% 85% at 50% 50%, rgba(26,107,122,.22) 0%, transparent 68%);
}
.cta-bg .section-inner { position: relative; z-index: 1; text-align: center; }
.cta-bg h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 800; color: #fff; margin-bottom: .85rem; }
.cta-bg p  { color: var(--text-muted); max-width: 440px; margin: 0 auto 2rem; line-height: 1.75; }

/* ── FOOTER ── */
.lp-footer {
    background: var(--dark-900);
    border-top: 1px solid rgba(59,189,212,.07);
    padding: 1.75rem 1.5rem;
    text-align: center; color: var(--text-muted); font-size: .8rem;
}
.lp-footer a { color: var(--brand-light); text-decoration: none; }
.lp-footer a:hover { color: var(--accent); }

/* ── REVEAL ON SCROLL ── */
.reveal {
    opacity: 0; transform: translateY(24px);
    transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* ── LEGAL PAGES ── */
.page-hero {
    padding: 8rem 1.5rem 4rem;
    text-align: center;
    position: relative; overflow: hidden;
}
.page-hero .hero-bg { position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(ellipse 80% 55% at 50% -10%, rgba(26,107,122,.45) 0%, transparent 65%), var(--dark-900); }
.page-hero .page-hero-inner { position: relative; z-index: 1; }
.page-hero .page-badge {
    display: inline-block;
    background: var(--glass); border: 1px solid var(--glass-border);
    color: var(--brand-light); padding: .28rem .9rem;
    border-radius: 100px; font-size: .73rem; font-weight: 700;
    letter-spacing: .07em; text-transform: uppercase; margin-bottom: 1rem;
}
.page-hero h1 {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 800; color: #fff; letter-spacing: -.02em; line-height: 1.15;
}
.page-hero .page-updated {
    margin-top: .85rem; font-size: .82rem; color: var(--text-muted);
}

.legal-wrap {
    max-width: 820px; margin: 0 auto;
    padding: 3.5rem 1.5rem 6rem;
}
.legal-wrap .legal-block { margin-bottom: 2.8rem; }
.legal-wrap h2 {
    font-size: 1.1rem; font-weight: 700; color: var(--brand-light);
    margin-bottom: .75rem; display: flex; align-items: center; gap: .55rem;
}
.legal-wrap h2::before {
    content: ''; display: inline-block;
    width: 4px; height: 1.1em; border-radius: 2px;
    background: linear-gradient(to bottom, var(--brand-mid), var(--accent));
    flex-shrink: 0;
}
.legal-wrap p, .legal-wrap li {
    font-size: .92rem; color: var(--text-muted); line-height: 1.8;
}
.legal-wrap ul { padding-left: 1.4rem; margin-top: .5rem; }
.legal-wrap ul li { margin-bottom: .35rem; }
.legal-wrap strong { color: var(--text-base); }
.legal-wrap .legal-highlight {
    background: var(--dark-700); border: 1px solid var(--glass-border);
    border-radius: 12px; padding: 1.2rem 1.5rem; margin-top: 1rem;
    font-size: .88rem; color: var(--text-muted); line-height: 1.75;
}
.legal-wrap .legal-contact {
    background: linear-gradient(135deg, var(--dark-700) 0%, var(--dark-600) 100%);
    border: 1px solid rgba(59,189,212,.2);
    border-radius: 14px; padding: 1.5rem 1.8rem;
    display: flex; align-items: flex-start; gap: 1rem;
}
.legal-wrap .legal-contact .lc-icon { font-size: 1.6rem; flex-shrink: 0; margin-top: .1rem; }
.legal-wrap .legal-contact p { margin: 0; font-size: .88rem; }
.legal-wrap .legal-contact a { color: var(--brand-light); text-decoration: none; }
.legal-wrap .legal-contact a:hover { color: var(--accent); }

.legal-divider {
    border: none;
    border-top: 1px solid rgba(59,189,212,.1);
    margin: 0 1.5rem 2.5rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .lp-nav { padding: .75rem 1.2rem; }
    .lp-nav .brand span { display: none; }
    .stats-bar { gap: 1.8rem; }
    .step:not(:last-child)::after { display: none; }
    .section { padding: 4rem 1.2rem; }
}