/* ========================================
   CUSTOM CSS - PORTFOLIO RAFAEL LÓPEZ
   Variables CSS para theming y estilos custom
   ======================================== */

/* ========================================
   CSS VARIABLES - LIGHT THEME (DEFAULT)
   ======================================== */
:root {
  /* Primary Colors */
  --color-primary: #1CB698;
  --color-primary-light: #10B981;
  --color-primary-dark: #059669;

  /* Background Colors */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F9FAFB;
  --color-bg-tertiary: #F3F4F6;
  --color-bg-elevated: #FFFFFF;

  /* Text Colors */
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;

  /* Border Colors */
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #F9FAFB 0%, #E5E7EB 100%);
  --gradient-primary: linear-gradient(135deg, #1CB698 0%, #10B981 100%);
}

/* ========================================
   CSS VARIABLES - DARK THEME
   ======================================== */
[data-theme="dark"] {
  /* Primary Colors */
  --color-primary: #10B981;
  --color-primary-light: #34D399;
  --color-primary-dark: #059669;

  /* Background Colors */
  --color-bg-primary: #0F172A;
  --color-bg-secondary: #1E293B;
  --color-bg-tertiary: #334155;
  --color-bg-elevated: #1E293B;

  /* Text Colors */
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --color-text-tertiary: #64748B;

  /* Border Colors */
  --color-border: #334155;
  --color-border-light: #475569;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5);

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  --gradient-primary: linear-gradient(135deg, #10B981 0%, #34D399 100%);
}

/* ========================================
   GLOBAL STYLES
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Work Sans', sans-serif;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ========================================
   THEME TRANSITION
   ======================================== */
body,
header,
section,
footer,
div,
nav,
a {
  transition: background-color 0.3s ease,
              color 0.3s ease,
              border-color 0.3s ease;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Righteous', cursive;
  color: var(--color-text-primary);
  line-height: 1.2;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

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

/* Gradient Animation for Hero */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.gradient-animate {
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
}

.animate-gradient-shift {
  background-size: 400% 400%;
  animation: gradientShift 20s ease infinite;
}

/* Animation Delays */
.delay-1000 {
  animation-delay: 1s;
}

.delay-2000 {
  animation-delay: 2s;
}

/* Hero Section Specific Animations */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

/* Glow effect for profile image */
@keyframes glow-pulse {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

.animate-glow-pulse {
  animation: glow-pulse 3s ease-in-out infinite;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.shadow-glow {
  box-shadow: 0 0 20px rgba(28, 182, 152, 0.3);
}

[data-theme="dark"] .shadow-glow {
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

/* Hover lift effect */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* ========================================
   FOCUS STATES (ACCESSIBILITY)
   ======================================== */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ========================================
   SELECTION STYLING
   ======================================== */
::selection {
  background-color: var(--color-primary);
  color: white;
}

::-moz-selection {
  background-color: var(--color-primary);
  color: white;
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
  body {
    background: white;
    color: black;
  }

  nav, footer {
    display: none;
  }
}

/* ========================================
   REDUCED MOTION (ACCESSIBILITY)
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================
   HEADER STYLES
   ======================================== */

/* Header scrolled effect */
header.header-scrolled {
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3);
}

[data-theme="dark"] header.header-scrolled {
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5);
}

/* Navigation link hover effect */
.nav-link {
  position: relative;
}

/* Active link styling */
.nav-link.active {
  color: var(--color-primary);
}

/* Scroll progress bar */
.scroll-progress {
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  transition: width 0.1s ease-out;
}

/* ========================================
   THEME & LANGUAGE TOGGLES
   ======================================== */

/* Toggle Container */
.menu__toggles {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
  margin-right: 1rem;
}

/* Toggle Button Base Styles */
.toggle-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  background: transparent;
  border: 2px solid var(--color-border);
  border-radius: 9999px;
  color: var(--color-text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  outline: none;
  min-width: 2.5rem;
  height: 2.5rem;
}

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

.toggle-btn:active {
  transform: translateY(0);
}

/* Theme Toggle Specific */
.theme-toggle i {
  font-size: 1.125rem;
  color: var(--color-text-primary);
  transition: all 0.3s ease;
}

.theme-toggle:hover i {
  color: var(--color-primary);
  transform: rotate(20deg);
}

[data-theme="dark"] .theme-toggle:hover i {
  color: var(--color-primary-light);
}

/* Language Toggle Specific */
.language-toggle {
  padding: 0.5rem 0.75rem;
}

.flag-icon {
  font-size: 1.25rem;
  line-height: 1;
}

.lang-text {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
}

.language-toggle:hover .lang-text {
  color: var(--color-primary);
}

/* Focus States for Accessibility */
.toggle-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

/* Active State Animation */
@keyframes togglePulse {
  0% {
    box-shadow: 0 0 0 0 rgba(28, 182, 152, 0.7);
  }
  70% {
    box-shadow: 0 0 0 6px rgba(28, 182, 152, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(28, 182, 152, 0);
  }
}

[data-theme="dark"] .toggle-btn:active {
  animation: togglePulse 0.5s ease-out;
}

/* Responsive Design for Toggles */
@media (max-width: 980px) {
  .menu__toggles {
    position: absolute;
    right: 4rem;
    top: 50%;
    transform: translateY(-50%);
    gap: 0.5rem;
  }

  .toggle-btn {
    padding: 0.375rem 0.625rem;
    min-width: 2.25rem;
    height: 2.25rem;
  }

  .language-toggle .lang-text {
    display: none;
  }

  .flag-icon {
    font-size: 1.125rem;
  }
}

@media (max-width: 700px) {
  .menu__toggles {
    right: 3.5rem;
  }

  .toggle-btn {
    padding: 0.25rem 0.5rem;
    min-width: 2rem;
    height: 2rem;
    border-width: 1.5px;
  }

  .theme-toggle i {
    font-size: 1rem;
  }

  .flag-icon {
    font-size: 1rem;
  }
}