/* =========================================
   Sports99 Promotional Website - Styles
   ========================================= */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- Theme System (CSS Custom Properties) ---------- */
:root {
  /* Light Mode (Default) */
  --color-bg-primary: #f8fafc;
  --color-bg-secondary: #f1f5f9;
  --color-bg-tertiary: #e2e8f0;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  
  --color-accent: #10b981;
  --color-accent-hover: #059669;
  --color-cta: #f97316;
  --color-cta-hover: #ea580c;
  
  --color-border: #cbd5e1;
  --color-card-bg: #ffffff;
  --color-header-bg: rgba(248, 250, 252, 0.85);
  
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.1);
  
  --gradient-hero: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
  --gradient-cta: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
}

[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  
  --color-accent: #34d399;
  --color-accent-hover: #10b981;
  --color-cta: #fb923c;
  --color-cta-hover: #f97316;
  
  --color-border: #334155;
  --color-card-bg: #1e293b;
  --color-header-bg: rgba(15, 23, 42, 0.9);
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
  color: var(--color-text-secondary);
}

.text-accent {
  color: var(--color-accent);
}

.text-gradient {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--gradient-cta);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

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

.btn-outline:hover {
  background: var(--color-accent);
  color: #ffffff;
}

/* ---------- Header / Navigation ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: var(--color-header-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  padding: 0.75rem 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-hero);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.2s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  font-size: 1.25rem;
}

.theme-toggle:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all 0.3s ease;
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: var(--gradient-hero);
  opacity: 0.1;
  border-radius: 50%;
  filter: blur(100px);
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 50%;
  height: 100%;
  background: var(--color-cta);
  opacity: 0.08;
  border-radius: 50%;
  filter: blur(80px);
}

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

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.hero-badge span {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: var(--color-text-secondary);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-phone {
  width: 280px;
  height: 560px;
  background: var(--color-card-bg);
  border-radius: 40px;
  border: 8px solid var(--color-bg-tertiary);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.hero-phone::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 24px;
  background: var(--color-bg-tertiary);
  border-radius: 20px;
}

.hero-phone-screen {
  position: absolute;
  inset: 50px 10px 10px;
  background: var(--gradient-hero);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  padding: 1rem;
}

.hero-phone-screen .phone-logo {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.hero-phone-screen p {
  color: rgba(255,255,255,0.8);
  font-size: 0.875rem;
}

.floating-card {
  position: absolute;
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: float 3s ease-in-out infinite;
}

.floating-card-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-hero);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
}

.floating-card-text {
  font-weight: 600;
  font-size: 0.875rem;
}

.floating-card-1 {
  top: 10%;
  right: 0;
  animation-delay: 0s;
}

.floating-card-2 {
  bottom: 20%;
  left: 0;
  animation-delay: 1s;
}

.floating-card-3 {
  bottom: 40%;
  right: -20px;
  animation-delay: 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- Features Section ---------- */
.features {
  background: var(--color-bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: 2rem;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-hero);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  background: var(--gradient-hero);
  color: #fff;
}

.feature-card h4 {
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.9375rem;
}

/* ---------- User Roles Section ---------- */
.roles {
  position: relative;
}

.roles-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.role-tab {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 500;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: all 0.2s ease;
}

.role-tab:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.role-tab.active {
  background: var(--gradient-hero);
  color: #fff;
  border-color: transparent;
}

.role-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.role-info h3 {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.role-icon {
  font-size: 2rem;
}

.role-info > p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.role-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.role-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.role-feature-icon {
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.role-feature p {
  font-size: 0.9375rem;
}

.role-visual {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.role-illustration {
  font-size: 8rem;
  opacity: 0.8;
}

/* ---------- How It Works Section ---------- */
.how-it-works {
  background: var(--color-bg-secondary);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: var(--color-border);
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--color-card-bg);
  border: 3px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  margin: 0 auto 1.5rem;
  position: relative;
}

.step-icon {
  position: absolute;
  bottom: -8px;
  right: -8px;
  width: 32px;
  height: 32px;
  background: var(--gradient-hero);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.875rem;
}

.step h4 {
  margin-bottom: 0.5rem;
}

/* ---------- Testimonials Section ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: 2rem;
  border: 1px solid var(--color-border);
  position: relative;
}

.testimonial-quote {
  font-size: 3rem;
  color: var(--color-accent);
  opacity: 0.3;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}

.testimonial-text {
  font-size: 1.0625rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  background: var(--gradient-hero);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
}

.testimonial-info h5 {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.testimonial-info p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ---------- CTA Section ---------- */
.cta {
  background: var(--gradient-hero);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.cta .container {
  position: relative;
  z-index: 1;
}

.cta h2 {
  color: #fff;
  margin-bottom: 1rem;
}

.cta p {
  color: rgba(255,255,255,0.85);
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta .btn-primary {
  background: #fff;
  color: var(--color-accent);
  font-size: 1.125rem;
  padding: 1rem 2.5rem;
}

.cta .btn-primary:hover {
  background: var(--color-bg-secondary);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-secondary);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.social-link:hover {
  background: var(--color-accent);
  color: #fff;
}

.footer-col h5 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  color: var(--color-text-primary);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ---------- Scroll Animations ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Mobile Menu ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-primary);
  z-index: 999;
  padding: 6rem 2rem 2rem;
  flex-direction: column;
  gap: 2rem;
}

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

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.mobile-nav a:hover {
  color: var(--color-accent);
}

/* ---------- Responsive Design ---------- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content {
    max-width: 100%;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-visual {
    display: none;
  }
  
  .role-content.active {
    grid-template-columns: 1fr;
  }
  
  .role-visual {
    order: -1;
    min-height: 250px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 3.5rem 0;
  }
  
  .nav-links {
    display: none;
  }
  
  .nav-actions .btn {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .steps {
    grid-template-columns: 1fr;
  }
  
  .steps::before {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .roles-tabs {
    gap: 0.25rem;
  }
  
  .role-tab {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  
  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}