/* ========================================
   SAFICUS - Modern Design System
   ======================================== */

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

/* ========================================
   CSS Variables & Design Tokens
   ======================================== */
:root {
  /* Modern Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --hero-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);

  --primary-color: #667eea;
  --primary-dark: #5568d3;
  --secondary-color: #f5576c;
  --accent-color: #f093fb;
  --success-color: #43e97b;
  --warning-color: #feca57;
  --danger-color: #ee5a6f;

  /* Neutral Colors */
  --dark: #1a1a2e;
  --gray-dark: #2d3561;
  --gray: #6c757d;
  --gray-light: #e9ecef;
  --light: #f8f9fa;
  --white: #ffffff;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(102, 126, 234, 0.1);
  --shadow-md: 0 8px 24px rgba(102, 126, 234, 0.15);
  --shadow-lg: 0 16px 48px rgba(102, 126, 234, 0.2);
  --shadow-xl: 0 24px 64px rgba(102, 126, 234, 0.25);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --backdrop-blur: blur(10px);

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

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

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

a {
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

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

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease forwards;
}

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

/* ========================================
   Header
   ======================================== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  transition: all var(--transition-normal);
}

header.scrolled {
  padding: var(--spacing-xs) var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 700;
  font-size: 1.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-img {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal);
}

.logo-img:hover {
  transform: rotate(360deg);
}

/* Navigation */
nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-xs);
}

nav li a {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-weight: 500;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

nav li a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  transition: left var(--transition-normal);
  z-index: -1;
  border-radius: var(--radius-full);
}

nav li a:hover {
  color: var(--white);
  transform: translateY(-2px);
}

nav li a:hover::before {
  left: 0;
}

/* Hamburger Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--primary-color);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Language Selector */
.language-selector select {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-full);
  background: var(--white);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.language-selector select:hover,
.language-selector select:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--hero-gradient);
  background-size: 200% 200%;
  animation: gradient 15s ease infinite;
  color: var(--white);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
  opacity: 0.3;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 0.8s ease;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
  opacity: 0.95;
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-demo-container {
  max-width: 700px;
  width: 100%;
  margin: var(--spacing-xl) auto 0;
  padding: var(--spacing-lg);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  animation: fadeInUp 0.8s ease 0.4s backwards;
}

/* Canvas */
canvas {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  background: rgba(0, 0, 0, 0.2);
  margin: var(--spacing-md) 0;
}

/* ========================================
   Buttons
   ======================================== */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  z-index: 1;
}

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

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: -1;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-secondary {
  background: var(--white);
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  background: var(--primary-gradient);
  color: var(--white);
}

/* ========================================
   About Section
   ======================================== */
#about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--spacing-2xl);
  max-width: 1200px;
  margin: var(--spacing-2xl) auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

#about-img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-slow);
}

#about-img:hover {
  transform: scale(1.05) rotate(2deg);
}

#about-text h2 {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

#about-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--gray-dark);
  margin-bottom: var(--spacing-md);
}

/* ========================================
   Features Section
   ======================================== */
#features {
  background: linear-gradient(180deg, var(--white) 0%, var(--light) 100%);
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

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

.feature-card svg {
  margin: 0 auto var(--spacing-md);
  transition: transform var(--transition-normal);
}

.feature-card:hover svg {
  transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
  color: var(--gray-dark);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--gray);
  line-height: 1.7;
}

/* ========================================
   Contact Section
   ======================================== */
#contact {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
}

#contact h2 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

#contact p {
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
  line-height: 1.8;
}

.contact-form {
  display: grid;
  gap: var(--spacing-sm);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: var(--backdrop-blur);
  color: var(--white);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

#contact-img-container img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* ========================================
   Footer
   ======================================== */
footer {
  background: var(--white);
  border-top: 1px solid var(--gray-light);
  padding: var(--spacing-lg);
  text-align: center;
  color: var(--gray);
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--gray-light);
  transition: all var(--transition-fast);
}

.social-icons a:hover {
  background: var(--primary-gradient);
  transform: translateY(-3px);
}

/* ========================================
   Modal
   ======================================== */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: var(--backdrop-blur);
  overflow: auto;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--white);
  margin: 5% auto;
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow-xl);
  position: relative;
  animation: fadeInUp 0.4s ease;
}

.close-modal {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--gray-light);
  color: var(--gray);
}

.close-modal:hover {
  background: var(--danger-color);
  color: var(--white);
  transform: rotate(90deg);
}

.login-form {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.login-form input {
  padding: var(--spacing-sm);
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.login-form input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.login-message {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  text-align: center;
  display: none;
}

.login-message.success {
  background: rgba(67, 233, 123, 0.1);
  color: var(--success-color);
  border: 2px solid var(--success-color);
  display: block;
}

.login-message.error {
  background: rgba(238, 90, 111, 0.1);
  color: var(--danger-color);
  border: 2px solid var(--danger-color);
  display: block;
}

/* ========================================
   Form Styles
   ======================================== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--white);
}

.form-group input {
  font-family: inherit;
  padding: var(--spacing-xs);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  width: 80px;
  transition: all var(--transition-fast);
}

.form-group input:focus {
  outline: none;
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.2);
}

.error-message {
  color: var(--danger-color);
  background: rgba(238, 90, 111, 0.1);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  display: none;
  margin-top: var(--spacing-sm);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
  #about,
  #contact {
    grid-template-columns: 1fr;
  }

  #contact-content {
    order: 1;
  }

  #contact-img-container {
    order: 2;
  }
}

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

  .hero {
    min-height: auto;
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

  .menu-toggle {
    display: flex;
  }

  nav {
    order: 4;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    margin-top: 0;
  }

  nav.active {
    max-height: 300px;
    margin-top: var(--spacing-md);
  }

  nav ul {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-xs);
  }

  nav li a {
    display: block;
    text-align: center;
    padding: var(--spacing-sm);
  }

  .language-selector {
    margin-left: auto;
    order: 2;
  }
}

@media (max-width: 480px) {
  header {
    padding: var(--spacing-sm);
  }

  .logo-container {
    font-size: 1.25rem;
  }

  .logo-img {
    width: 40px;
    height: 40px;
  }
}

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

.glassmorphism {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
}

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }