/* WhatsApp Link Generator - Main Stylesheet */

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

:root {
  --primary-color: #25d366;
  --secondary-color: #128c7e;
  --font-size: 16px;
  --bg-color: #ffffff;
  --text-color: #333333;
  --text-light: #666666;
  --border-color: #e0e0e0;
  --card-bg: #ffffff;
  --shadow: 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);
  --radius: 12px;
  --transition: all 0.3s ease;
}

/* Dark Mode Variables */
.dark-mode {
  --bg-color: #1a1a2e;
  --text-color: #e0e0e0;
  --text-light: #a0a0a0;
  --border-color: #333355;
  --card-bg: #16213e;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

html {
  font-size: var(--font-size);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.site-header {
  background: var(--card-bg);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--primary-color);
  font-weight: 700;
  font-size: 1.25rem;
}

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

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 0;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text-color);
  border-radius: 3px;
  transition: var(--transition);
}

/* Main Content */
.site-main {
  flex: 1;
  padding: 2rem 0;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 2rem 0 3rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.hero .main-heading {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1.125rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Tool Section */
.tool-section {
  max-width: 600px;
  margin: 0 auto 3rem;
}

.tool-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  border: 1px solid var(--border-color);
}

.whatsapp-icon {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

/* Form Styles */
.whatsapp-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
  color: var(--text-color);
}

.form-group small {
  color: var(--text-light);
  font-size: 0.875rem;
}

.input-wrapper {
  display: flex;
  gap: 0.5rem;
}

.country-code-input {
  width: 80px;
  flex-shrink: 0;
}

.phone-input {
  flex: 1;
}

input[type="text"],
input[type="tel"],
input[type="email"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  color: var(--text-color);
  background: var(--bg-color);
  transition: var(--transition);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--primary-color);
}

.btn-success {
  background: var(--primary-color);
  color: white;
  width: 100%;
}

.btn-success:hover {
  background: var(--secondary-color);
}

.btn-danger {
  background: #dc3545;
  color: white;
}

.btn-danger:hover {
  background: #c82333;
}

/* Result Section */
.result-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.result-wrapper {
  display: flex;
  gap: 0.5rem;
}

.generated-link {
  flex: 1;
  background: var(--bg-color);
}

.action-buttons {
  margin-top: 1rem;
}

/* Features Section */
.features {
  padding: 3rem 0;
}

.features h3 {
  text-align: center;
  font-size: 1.75rem;
  margin-bottom: 2rem;
  color: var(--text-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
}

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

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.feature-card p {
  color: var(--text-light);
  font-size: 0.9375rem;
}

/* Footer */
.site-footer {
  background: var(--card-bg);
  padding: 1.5rem 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.site-footer p {
  color: var(--text-light);
  font-size: 0.875rem;
}

/* Tool Disabled */
.tool-disabled {
  text-align: center;
  padding: 3rem;
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  max-width: 600px;
  margin: 0 auto;
}

/* Alerts */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-weight: 500;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.alert-error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.alert-info {
  background: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* Copy Success Animation */
.copy-success {
  animation: pulse 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    box-shadow: var(--shadow);
    display: none;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li {
    border-bottom: 1px solid var(--border-color);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-menu a {
    display: block;
    padding: 0.75rem 0;
  }

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

  .hero .main-heading {
    font-size: 1.25rem;
  }

  .tool-card {
    padding: 1.5rem;
  }

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

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

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.75rem;
  }

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

  .country-code-input {
    width: 100%;
  }
}