/* ===================================
   Personal Portfolio - John Emerson Rodrigo Quispe
   Modern Minimalist Design System
   =================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* ===================================
   CSS VARIABLES - DESIGN TOKENS
   =================================== */

:root {
  /* Colors - Light Mode */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #f1f3f5;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a5568;
  --color-text-tertiary: #718096;
  --color-accent-primary: #3b82f6;
  --color-accent-secondary: #8b5cf6;
  --color-accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --color-border: #e2e8f0;
  --color-shadow: rgba(0, 0, 0, 0.1);
  --color-overlay: rgba(255, 255, 255, 0.9);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Poppins', sans-serif;

  --font-size-xs: 0.75rem;
  /* 12px */
  --font-size-sm: 0.875rem;
  /* 14px */
  --font-size-base: 1rem;
  /* 16px */
  --font-size-lg: 1.125rem;
  /* 18px */
  --font-size-xl: 1.25rem;
  /* 20px */
  --font-size-2xl: 1.5rem;
  /* 24px */
  --font-size-3xl: 1.875rem;
  /* 30px */
  --font-size-4xl: 2.25rem;
  /* 36px */
  --font-size-5xl: 3rem;
  /* 48px */
  --font-size-6xl: 3.75rem;
  /* 60px */

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --space-xs: 0.25rem;
  /* 4px */
  --space-sm: 0.5rem;
  /* 8px */
  --space-md: 1rem;
  /* 16px */
  --space-lg: 1.5rem;
  /* 24px */
  --space-xl: 2rem;
  /* 32px */
  --space-2xl: 3rem;
  /* 48px */
  --space-3xl: 4rem;
  /* 64px */
  --space-4xl: 6rem;
  /* 96px */
  --space-5xl: 8rem;
  /* 128px */

  /* Border Radius */
  --radius-sm: 0.375rem;
  /* 6px */
  --radius-md: 0.5rem;
  /* 8px */
  --radius-lg: 0.75rem;
  /* 12px */
  --radius-xl: 1rem;
  /* 16px */
  --radius-2xl: 1.5rem;
  /* 24px */
  --radius-full: 9999px;

  /* 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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;

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

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-accent-primary: #60a5fa;
  --color-accent-secondary: #a78bfa;
  --color-accent-gradient: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  --color-border: #334155;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-overlay: rgba(15, 23, 42, 0.9);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-secondary);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-secondary);
}

/* ===================================
   LAYOUT COMPONENTS
   =================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

section {
  padding: var(--space-5xl) 0;
}

/* ===================================
   NAVIGATION
   =================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

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

.nav__logo {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav__link::before {
  content: '//';
  margin-right: var(--space-xs);
  color: var(--color-accent-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.nav__link:hover::before,
.nav__link.active::before {
  opacity: 1;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* Theme Toggle Button */
.theme-toggle {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  width: 50px;
  height: 28px;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-base);
}

.theme-toggle::before {
  content: '🌙';
  position: absolute;
  top: 50%;
  left: 4px;
  transform: translateY(-50%);
  font-size: 14px;
  transition: all var(--transition-base);
}

[data-theme="dark"] .theme-toggle::before {
  content: '☀️';
  left: 26px;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.hero__content {
  animation: fadeInUp 0.8s ease-out;
}

.hero__greeting {
  font-size: var(--font-size-lg);
  color: var(--color-accent-primary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero__subtitle {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-weight: var(--font-weight-medium);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
}

.hero__buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__image {
  position: relative;
  animation: fadeInRight 0.8s ease-out;
}

.hero__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  filter: drop-shadow(0 20px 40px rgba(59, 130, 246, 0.2));
}

/* Floating Cards */
.floating-card {
  position: absolute;
  background: var(--color-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
}

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

.floating-card--2 {
  bottom: 15%;
  right: 5%;
  animation-delay: 1s;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-primary);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

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

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
}

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

/* ===================================
   SECTION HEADERS
   =================================== */

.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section-header__subtitle {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-primary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: var(--space-sm);
}

.section-header__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

.section-header__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-tertiary);
  max-width: 700px;
  margin: 0 auto;
}

/* ===================================
   ABOUT SECTION
   =================================== */

.about__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4xl);
  margin-bottom: var(--space-4xl);
}

.about__text {
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

.about__stats {
  display: grid;
  gap: var(--space-lg);
}

.stat-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-card__number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ===================================
   PROJECTS SECTION
   =================================== */

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-2xl);
}

.project-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.project-card__image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image {
  transform: scale(1.05);
}

.project-card__content {
  padding: var(--space-xl);
}

.project-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
}

.project-card__description {
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-lg);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.tag {
  font-size: var(--font-size-xs);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
}

.project-card__links {
  display: flex;
  gap: var(--space-md);
}

.project-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: var(--color-border);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
  position: relative;
}

.timeline-item:nth-child(even) .timeline-item__content {
  grid-column: 1;
  grid-row: 1;
}

.timeline-item:nth-child(even) .timeline-item__date {
  grid-column: 2;
  grid-row: 1;
  text-align: left;
}

.timeline-item__content {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
  transition: all var(--transition-base);
}

.timeline-item__content:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.timeline-item__icon {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-lg);
  z-index: 1;
}

.timeline-item__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.timeline-item__company {
  color: var(--color-accent-primary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
}

.timeline-item__description {
  color: var(--color-text-tertiary);
}

.timeline-item__date {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-medium);
}

/* ===================================
   SKILLS SECTION
   =================================== */

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-xl);
}

.skill-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-primary);
}

.skill-card__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

.skill-card__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact {
  background: var(--color-bg-secondary);
}

.contact__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-info-item__icon {
  width: 50px;
  height: 50px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.contact-info-item__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

.contact-info-item__value {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
}

.form-input,
.form-textarea {
  padding: var(--space-md);
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  font-size: var(--font-size-sm);
  color: #ef4444;
  margin-top: var(--space-xs);
}

/* Social Links */
.social-links {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.social-link {
  width: 50px;
  height: 50px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--color-accent-gradient);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ===================================
   FOOTER
   =================================== */

.footer {
  background: var(--color-bg-tertiary);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer__about {
  max-width: 400px;
}

.footer__logo {
  font-family: var(--font-secondary);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.footer__description {
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-lg);
}

.footer__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent-primary);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* ===================================
   WHATSAPP FLOATING BUTTON
   =================================== */

.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  color: white;
  box-shadow: var(--shadow-xl);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
  animation: pulse 2s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-2xl);
}

/* ===================================
   ANIMATIONS
   =================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
  :root {
    --font-size-6xl: 3rem;
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
  }

  .hero__container,
  .about__content,
  .contact__container {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero__image {
    order: -1;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    padding-left: 60px;
  }

  .timeline-item__icon {
    left: 20px;
  }

  .timeline-item:nth-child(even) .timeline-item__content,
  .timeline-item:nth-child(even) .timeline-item__date {
    grid-column: 1;
  }

  .timeline-item__date {
    justify-content: flex-start;
  }

  .footer__content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --space-5xl: 4rem;
    --space-4xl: 3rem;
  }

  .container {
    padding: 0 var(--space-md);
  }

  section {
    padding: var(--space-3xl) 0;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--color-overlay);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--space-2xl);
    transition: left var(--transition-base);
  }

  .nav__menu.active {
    left: 0;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }

  .nav__toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-xl);
  }

  .hero__buttons {
    flex-direction: column;
  }

  .floating-card {
    display: none;
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .skills__grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }

  .btn {
    width: 100%;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
  }

  .section-header__title {
    font-size: var(--font-size-3xl);
  }

  .section-header__subtitle {
    font-size: var(--font-size-xs);
  }

  .section-header__description {
    font-size: var(--font-size-base);
  }

  /* Navegación móvil más compacta */
  .nav__link {
    font-size: var(--font-size-sm);
    padding: var(--space-md);
    width: 100%;
    justify-content: flex-start;
  }

  .nav__link i {
    margin-right: var(--space-sm);
    font-size: var(--font-size-base);
  }

  /* Hero section más compacto */
  .hero__greeting {
    font-size: var(--font-size-base);
  }

  .hero__title {
    font-size: var(--font-size-3xl);
    line-height: 1.2;
  }

  .hero__subtitle {
    font-size: var(--font-size-lg);
  }

  .hero__description {
    font-size: var(--font-size-base);
  }

  /* Tarjetas de estadísticas más pequeñas */
  .stat-card {
    padding: var(--space-md);
  }

  .stat-card__number {
    font-size: var(--font-size-2xl);
  }

  /* Tarjetas de proyectos */
  .project-card__image {
    height: 200px;
  }

  .project-card__content {
    padding: var(--space-lg);
  }

  .project-card__title {
    font-size: var(--font-size-lg);
  }

  .project-card__description {
    font-size: var(--font-size-sm);
  }

  /* Timeline más compacto */
  .timeline-item {
    padding-left: 50px;
  }

  .timeline-item__icon {
    width: 35px;
    height: 35px;
    font-size: var(--font-size-base);
    left: 17px;
  }

  .timeline::before {
    left: 17px;
  }

  .timeline-item__title {
    font-size: var(--font-size-lg);
  }

  .timeline-item__company {
    font-size: var(--font-size-sm);
  }

  .timeline-item__description {
    font-size: var(--font-size-sm);
  }

  /* Skills grid más pequeño */
  .skills__grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-md);
  }

  .skill-card {
    padding: var(--space-md);
  }

  .skill-card__icon {
    font-size: var(--font-size-3xl);
  }

  .skill-card__name {
    font-size: var(--font-size-sm);
  }

  /* Contacto */
  .contact-info-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .contact-info-item__icon {
    width: 45px;
    height: 45px;
    font-size: var(--font-size-lg);
  }

  .contact-info-item__value {
    font-size: var(--font-size-base);
    word-break: break-word;
  }

  .form-input,
  .form-textarea {
    font-size: var(--font-size-sm);
  }

  /* Social links */
  .social-links {
    justify-content: center;
    flex-wrap: wrap;
  }

  .social-link {
    width: 45px;
    height: 45px;
    font-size: var(--font-size-lg);
  }

  /* Footer */
  .footer__content {
    gap: var(--space-2xl);
  }

  .footer__logo {
    font-size: var(--font-size-xl);
  }

  .footer__description {
    font-size: var(--font-size-sm);
  }

  /* WhatsApp button */
  .whatsapp-float {
    width: 45px;
    height: 45px;
    bottom: 15px;
    right: 15px;
    font-size: var(--font-size-xl);
  }

  /* About text */
  .about__text {
    font-size: var(--font-size-base);
  }

  .about__text p {
    font-size: var(--font-size-base);
  }
}

/* Mejoras adicionales para tablets */
@media (min-width: 481px) and (max-width: 768px) {
  .projects__grid {
    grid-template-columns: 1fr;
  }

  .skills__grid {
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  }

  .hero__buttons {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .btn {
    flex: 1;
    min-width: 150px;
  }
}

/* Mejoras para pantallas muy pequeñas (menos de 360px) */
@media (max-width: 360px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .hero__title {
    font-size: var(--font-size-2xl);
  }

  .section-header__title {
    font-size: var(--font-size-2xl);
  }

  .nav__logo {
    font-size: var(--font-size-lg);
  }

  .theme-toggle {
    width: 45px;
    height: 25px;
  }

  .project-card__tags {
    gap: var(--space-xs);
  }

  .tag {
    font-size: 0.65rem;
    padding: 2px var(--space-sm);
  }
}

/* Mejoras para landscape en móviles */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: var(--space-3xl) 0;
  }

  section {
    padding: var(--space-2xl) 0;
  }

  .nav__menu {
    height: auto;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }
}

/* Optimización para impresión */
@media print {

  .header,
  .nav__toggle,
  .theme-toggle,
  .whatsapp-float,
  .floating-card {
    display: none;
  }

  .hero {
    padding-top: 0;
  }

  section {
    page-break-inside: avoid;
  }

  .project-card,
  .timeline-item,
  .skill-card {
    page-break-inside: avoid;
  }
}

/* ===================================
   UTILITY CLASSES
   =================================== */

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

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

.mb-0 {
  margin-bottom: 0;
}

.mt-lg {
  margin-top: var(--space-lg);
}

.hidden {
  display: none;
}