/* ========================================
   BELLUN DEREST - TENNIS TRAINING SPACE
   Professional Sports Website CSS
   ======================================== */

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #000000;
    background-color: #ffffff;
    overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
}

p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

/* ===== COLORS & ACCENTS ===== */
.accent {
    color: #FF0000;
}

.accent-bg {
    background-color: #FF0000;
}

.accent-border {
    border: 2px solid #FF0000;
}

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

/* ===== LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
    position: relative;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    color: #000000;
}

.nav {
    display: flex;
    gap: 3rem;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #FF0000;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #FF0000;
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Menu */
.burger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.burger-line {
    width: 25px;
    height: 3px;
    background-color: #000000;
    transition: all 0.3s ease;
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #000000;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    text-align: center;
}

.mobile-nav-link {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 2rem;
    transition: color 0.3s ease;
}

.mobile-nav-link:hover {
    color: #FF0000;
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .burger {
        display: flex;
    }
}

/* ===== HERO SECTION ===== */
.hero {
    background-color: #000000;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-image {
    position: relative;
    height: 600px;
    background-image: url('../images/1.webp');
    background-size: cover;
    background-position: center;
    border-radius: 0;
}

.hero-accent {
    width: 4px;
    height: 60px;
    background-color: #FF0000;
    margin-bottom: 2rem;
}

.hero h1 {
    margin-bottom: 1rem;
}

.hero h2 {
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    max-width: 500px;
}

@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-image {
        height: 400px;
        order: -1;
    }

    .hero-accent {
        margin: 0 auto 2rem;
    }
}

/* ===== CONTENT SPLIT ===== */
.content-split {
    background-color: #ffffff;
}

.content-split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
}

.content-split-image {
    height: 500px;
    background-image: url('../images/2.webp');
    background-size: cover;
    background-position: center;
    border-radius: 0;
}

.content-split-content h2 {
    margin-bottom: 2rem;
    font-size: 2.2rem;
}

.content-split-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .content-split-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .content-split-image {
        height: 350px;
        order: -1;
    }
}

/* ===== STATEMENT BLOCK ===== */
.statement {
    background-color: #000000;
    color: #ffffff;
    padding: 8rem 2rem;
    text-align: center;
}

.statement-content {
    max-width: 800px;
    margin: 0 auto;
}

.statement h2 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.statement-accent {
    color: #FF0000;
}

/* ===== CTA SECTION ===== */
.cta {
    background-color: #FF0000;
    color: #ffffff;
    padding: 6rem 2rem;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta h2 {
    font-size: clamp(2rem, 3vw, 2.8rem);
    font-weight: 900;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.cta-button {
    display: inline-block;
    padding: 1.2rem 3rem;
    border: 2px solid #ffffff;
    color: #ffffff;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
    margin-top: 2rem;
}

.cta-button:hover {
    background-color: #ffffff;
    color: #FF0000;
}

/* ===== FOOTER ===== */
.footer {
    background-color: #000000;
    color: #ffffff;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.footer-nav h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #ffffff;
}

.footer-nav ul {
    list-style: none;
}

.footer-nav li {
    margin-bottom: 0.8rem;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: #FF0000;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 3rem;
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== UTILITIES ===== */
.text-center {
    text-align: center;
}

.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .section {
        padding: 4rem 0;
    }

    .hero {
        padding-top: 80px;
    }

    .statement {
        padding: 5rem 1rem;
    }

    .cta {
        padding: 4rem 1rem;
    }

    .footer {
        padding: 3rem 1rem 2rem;
    }
}