:root {
    --primary: #FF0000;
    --primary-alt: #CC0000;
    --bg-dark: #0A0A0A;
    --bg-card: #151515;
    --text-main: #FFFFFF;
    --text-dim: #A0A0A0;
    --white: #FFFFFF;
    --container-width: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .logo {
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
    font-weight: 700;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 8rem 0;
}

.bg-dark {
    background-color: #000000;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 3rem;
    text-align: center;
    letter-spacing: 2px;
}

.highlight {
    color: var(--primary);
}

/* Header */
header {
    padding: 1.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    letter-spacing: 3px;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-alt);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255,0,0,0.2);
}

.btn-outline {
    border: 1px solid var(--white);
    color: var(--white);
    margin-left: 1rem;
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--bg-dark);
}

/* Hero */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.9)), url('https://images.unsplash.com/photo-1552072092-7f9b8d63efcb?q=80&w=2070') center/cover;
    position: relative;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
}

.badge {
    background: var(--primary);
    color: white;
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 2rem;
    display: inline-block;
}

#hero h1 {
    font-size: 6rem;
    line-height: 0.9;
    margin-bottom: 2rem;
}

#hero p {
    font-size: 1.25rem;
    color: var(--text-dim);
    margin-bottom: 3rem;
}

/* Disciplines Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.discipline-card {
    height: 500px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: 3rem;
    border: 1px solid rgba(255,255,255,0.05);
}

.discipline-card#muay-thai {
    background: linear-gradient(to top, rgba(0,0,0,1), transparent), url('https://images.unsplash.com/photo-1599058917233-35f694ca6109?q=80&w=1974') center/cover;
}

.discipline-card#bjj {
    background: linear-gradient(to top, rgba(0,0,0,1), transparent), url('https://images.unsplash.com/photo-1583095117565-5e04618778f2?q=80&w=2076') center/cover;
}

.discipline-card h3 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Schedule */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.schedule-card {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 8px;
    text-align: center;
    border-bottom: 4px solid var(--primary);
}

.day-badge {
    display: block;
    font-size: 1.5rem;
    font-family: 'Oswald';
    margin-bottom: 2rem;
}

.time-slot {
    font-size: 2rem;
    font-weight: 700;
    margin: 1rem 0;
}

/* Instructors */
.instructor-card {
    text-align: center;
}

.instructor-img.placeholder {
    width: 250px;
    height: 350px;
    background: #222;
    margin: 0 auto 1.5rem;
    position: relative;
    overflow: hidden;
}

.instructor-img.placeholder::after {
    content: 'FOTO PROF';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #444;
    font-weight: 700;
}

/* Contact */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.address {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

.map-placeholder {
    background: #111;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.05);
}

/* Responsive */
@media (max-width: 768px) {
    #hero h1 { font-size: 3.5rem; }
    .section-title { font-size: 2rem; }
    .nav-links { display: none; }
    .schedule-grid, .contact-layout { grid-template-columns: 1fr; }
}