/* ================================================
   ROOT.CSS — Xtreme Fitness Studio
   Design System: Variables, Global Styles, Utilities
================================================ */

/* ================================================
   DESIGN TOKENS — Premium Red Gym Theme
================================================ */
:root {
  /* Primary Colors */
  --primary-color: #e60000;
  --primary-dark: #b30000;
  --primary-light: #ff1a1a;

  /* Secondary Colors */
  --secondary-color: #ff3333;
  --secondary-dark: #cc0000;

  /* Background Colors — Deep industrial blacks */
  --bg-primary: #050505;
  --bg-secondary: #0f0f0f;
  --bg-tertiary: #161616;
  --bg-quaternary: #222222;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --text-tertiary: #a0a0a0;
  --text-muted: #666666;

  /* Border Colors */
  --border-primary: #e60000;
  --border-secondary: #1a1a1a;

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Courier New", monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;

  /* Shadows with red glow */
  --shadow-sm: 0 1px 2px 0 rgba(230, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(230, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(230, 0, 0, 0.15);
  --shadow-xl: 0 20px 25px -5px rgba(230, 0, 0, 0.2);
  --shadow-2xl: 0 25px 50px -12px rgba(230, 0, 0, 0.3);
  --glow: 0 0 20px rgba(230, 0, 0, 0.5);

  /* Navbar height reference */
  --navbar-height: 64px;
}

@media (max-width: 768px) {
  :root {
    --spacing-2xl: 2rem;
    --spacing-3xl: 3rem;
    --navbar-height: 60px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-2xl: 1.5rem;
    --spacing-3xl: 2rem;
    --navbar-height: 54px;
  }
}

/* ================================================
   GLOBAL RESET
================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ================================================
   TYPOGRAPHY
================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-light);
}

/* ================================================
   BUTTONS
================================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  font-family: var(--font-sans);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
  text-shadow: 0 0 10px rgba(230, 0, 0, 0.5);
  box-shadow: 0 0 20px rgba(230, 0, 0, 0.4), inset 0 0 20px rgba(230, 0, 0, 0.1);
  font-weight: 900;
}

.btn-primary:hover {
  background-color: var(--primary-light);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 0 30px rgba(230, 0, 0, 0.6), inset 0 0 30px rgba(230, 0, 0, 0.2);
  text-shadow: 0 0 15px rgba(230, 0, 0, 0.8);
  color: #ffffff;
}

.btn-secondary {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background-color: transparent;
  box-shadow: inset 0 0 10px rgba(230, 0, 0, 0.2), 0 0 10px rgba(230, 0, 0, 0.3);
  text-shadow: 0 0 8px rgba(230, 0, 0, 0.4);
}

.btn-secondary:hover {
  background-color: rgba(230, 0, 0, 0.1);
  box-shadow: inset 0 0 15px rgba(230, 0, 0, 0.3), 0 0 20px rgba(230, 0, 0, 0.5);
  transform: scale(1.02);
  color: var(--primary-color);
}

.btn-submit {
  width: 100%;
  margin-top: 0.5rem;
  padding: 1rem 1.75rem;
  font-size: 1.05rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ================================================
   SECTION HEADERS
================================================ */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-shadow: 0 0 20px rgba(230, 0, 0, 0.4);
}

.section-subtitle {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--text-tertiary);
  max-width: 600px;
  margin: 0 auto;
}

/* ================================================
   FORMS
================================================ */
.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid rgba(230, 0, 0, 0.4);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(230, 0, 0, 0.15);
  background-color: var(--bg-tertiary);
}

/* Select specific styling */
.form-select {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23e60000' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-select option {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.form-select:invalid,
.form-select option[value=""] {
  color: var(--text-muted);
}

/* ================================================
   UTILITY CLASSES
================================================ */
.hidden {
  display: none !important;
}

.w-full {
  width: 100%;
}

/* ================================================
   WHATSAPP FLOATING BUTTON
================================================ */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  background-color: #25D366;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  z-index: 999;
  transition: all 0.3s ease;
}

.whatsapp-float:hover {
  background-color: #1ebe5d;
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.7);
  color: #ffffff;
}

@media (max-width: 480px) {
  .whatsapp-float {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    bottom: 1rem;
    right: 1rem;
  }
}