/* ========================================
   GOH GYM - FRONTEND PHP GLOBAL STYLES
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ======================================== */
:root {
  /* Brand Colors */
  --color-primary: #e86c0e;
  --color-accent: #E5CA10;
  
  /* Primary Color Variations */
  --color-primary-light: #ff7a1a;
  --color-primary-dark: #d45a00;
  --color-primary-hover: #ff8533;
  
  /* Accent Color Variations */
  --color-accent-light: #f5d920;
  --color-accent-dark: #d4b300;
  --color-accent-hover: #f0d615;
  
  /* Glass Effect Colors */
  --glass-bg: rgba(116, 116, 116, 0.486);
  --glass-border: rgba(255, 255, 255, 0.67);
  --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  
  /* Background Overlay */
  --bg-overlay: rgba(0, 0, 0, 0.4);
  --bg-dark: #1a1a1a;
  
  /* Text Colors */
  --text-white: #ffffff;
  --text-light: rgba(255, 255, 255, 0.9);
  --text-muted: rgba(255, 255, 255, 0.7);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 50px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-medium: 0.25s ease;
  --transition-slow: 0.3s ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html, body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
  min-width: 320px;
  min-height: 100vh;
  background: #f5f5f5;
}

#root, .app-root {
  width: 100%;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: 1.2;
}

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

input, button, textarea, select {
  font-family: inherit;
}

/* ========================================
   BACKGROUND SYSTEM
   ======================================== */
.bg-standard {
  position: relative;
  background: 
    
    url('../assets/background.webp') center/cover no-repeat;
  background-attachment: fixed;
}

.bg-standard::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.1);
  z-index: 0;
  pointer-events: none;
}

/* ========================================
   GLASS MORPHISM SYSTEM
   ======================================== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  position: relative;
  z-index: 2;
}

.glass-navbar {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  z-index: 10;
}

/* Variaciones de glass */
.glass-light {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-dark {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========================================
   BUTTON SYSTEM
   ======================================== */
.btn {
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 0.6em 1.2em;
  font-size: 1em;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition-medium);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-accent);
  color: var(--text-white);
  border-color: var(--color-accent);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover:not(:disabled) {
  background: var(--text-white);
  color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-white);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
}

.btn-round {
  border-radius: var(--radius-xl);
}

.btn-small {
  padding: 0.4em 0.8em;
  font-size: 0.875em;
  min-height: 36px;
}

.btn-large {
  padding: 0.8em 1.6em;
  font-size: 1.125em;
  min-height: 52px;
}

/* ========================================
   FORM SYSTEM
   ======================================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.form-label {
  font-weight: 500;
  color: var(--text-white);
  font-size: 0.875em;
}

.form-input {
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
  font-size: 1rem;
  transition: var(--transition-medium);
  backdrop-filter: blur(10px);
}

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

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(229, 202, 16, 0.2);
  background: rgba(255, 255, 255, 0.15);
}

.form-input:invalid {
  border-color: #ef4444;
}

.form-error {
  color: #fca5a5;
  font-size: 0.875em;
  margin-top: var(--spacing-xs);
}

/* ========================================
   TYPOGRAPHY SYSTEM
   ======================================== */
.text-white { color: var(--text-white); }
.text-light { color: var(--text-light); }
.text-muted { color: var(--text-muted); }

.text-shadow {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ========================================
   LAYOUT UTILITIES
   ======================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.flex-center {
  justify-content: center;
  align-items: center;
}

.flex-between {
  justify-content: space-between;
}

.flex-around {
  justify-content: space-around;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* ========================================
   SPACING UTILITIES
   ======================================== */
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ========================================
   ANIMATIONS & TRANSITIONS
   ======================================== */
.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

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

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .glass-card {
    margin: var(--spacing-sm);
    padding: var(--spacing-md);
  }
}

/* ========================================
   LOADING STATES
   ======================================== */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ========================================
   ERROR STATES
   ======================================== */
.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin: var(--spacing-md) 0;
}

.success-message {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #86efac;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin: var(--spacing-md) 0;
}