/* Google Fonts - Cairo (Arabic Support) */
@import url("https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;600;700;900&display=swap");

:root {
  /* Colors */
  --color-primary: #8b0000; /* Deep Red - Martial Arts */
  --color-primary-dark: #5e0000;
  --color-secondary: #1a1a1a;
  --color-accent: #d4af37; /* Gold/Bronze for highlights */
  --color-text: #e0e0e0;
  --color-text-muted: #a0a0a0;
  --color-bg: #0f0f0f;
  --color-surface: #1e1e1e;
  --color-white: #ffffff;

  /* Spacing */
  --spacer-xs: 0.5rem; /* 8px */
  --spacer-sm: 1rem; /* 16px */
  --spacer-md: 2rem; /* 32px */
  --spacer-lg: 4rem; /* 64px */
  --spacer-xl: 8rem; /* 128px */

  /* Typography */
  --font-heading: "Cairo", sans-serif;
  --font-body: "Cairo", sans-serif;

  /* Layout */
  --container-width: 1200px;
  --header-height: 80px;

  /* Effects */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.4);
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  direction: rtl; /* RTL Support for Arabic */
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacer-sm);
  color: var(--color-white);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

/* Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacer-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-white);
  color: var(--color-white);
}

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

.section-padding {
  padding: var(--spacer-xl) 0;
}

/* Components */

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: var(--spacer-md);
}

.nav-link {
  color: var(--color-text);
  font-weight: 600;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  right: 0; /* Updated for RTL */
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-white);
}

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

/* Hero Section */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--header-height);
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.7)),
    url("../images/hero_bg.jpeg"); /* Placeholder path */
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero-content {
  max-width: 800px;
  padding: var(--spacer-md);
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 5rem);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  margin-bottom: var(--spacer-md);
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  margin-bottom: var(--spacer-lg);
  color: var(--color-text);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* Footer */
footer {
  background-color: var(--color-secondary);
  padding: var(--spacer-lg) 0 var(--spacer-md);
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: grid;
  gap: var(--spacer-md);
  margin-bottom: var(--spacer-md);
}

.copyright {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* Add JS toggle later */
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--color-bg);
    flex-direction: column;
    padding: var(--spacer-md);
    text-align: center;
  }

  .nav-links.active {
    display: flex;
  }
}

/* Instructor Card */
.instructor-card {
    display: flex;
    flex-direction: column; /* Default stack on mobile */
    align-items: center;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .instructor-card {
        flex-direction: row; /* Side by side on desktop */
        align-items: stretch;
    }
}

.instructor-image {
    flex: 1;
    min-width: 300px;
    background-color: var(--color-bg);
}

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.instructor-details {
    flex: 1.5;
    padding: var(--spacer-md) var(--spacer-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: right;
}

.instructor-details h3 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacer-xs);
}

.instructor-details .role {
    font-size: 1.2rem;
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: var(--spacer-md);
}

.instructor-details .bio {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
}