/* Medlifelink Landing Page CSS */
/* Matching the app's Apple-inspired design system */

/* ===== CSS VARIABLES (Design Tokens) ===== */
:root {
  /* Colors from app theme */
  --primary-50: #FFF1F1;
  --primary-100: #FFE1E1;
  --primary-200: #FFC7C7;
  --primary-300: #FFA3A3;
  --primary-400: #FF6B6B;
  --primary-500: #FF3B3B; /* Main brand red from logo */
  --primary-600: #F72525;
  --primary-700: #D91818;
  --primary-800: #B31515;
  --primary-900: #8B1111;

  /* Neutrals */
  --neutral-0: #FFFFFF;
  --neutral-50: #FAFAFA;
  --neutral-100: #F5F5F5;
  --neutral-200: #E5E5E5;
  --neutral-300: #D4D4D4;
  --neutral-400: #A3A3A3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  --neutral-1000: #000000;

  /* Semantic Colors */
  --success-main: #10B981;
  --success-light: #D1FAE5;
  --warning-main: #F59E0B;
  --warning-light: #FEF3C7;
  --error-main: #EF4444;
  --error-light: #FEE2E2;
  --info-main: #3B82F6;
  --info-light: #DBEAFE;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing (4px base grid) */
  --spacing-0: 0;
  --spacing-1: 4px;
  --spacing-2: 8px;
  --spacing-3: 12px;
  --spacing-4: 16px;
  --spacing-5: 20px;
  --spacing-6: 24px;
  --spacing-8: 32px;
  --spacing-10: 40px;
  --spacing-12: 48px;
  --spacing-16: 64px;
  --spacing-20: 80px;
  --spacing-24: 96px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 16px 32px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 200ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 400ms ease;

  /* Container */
  --container-max-width: 1200px;
  --container-padding: var(--spacing-6);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--neutral-800);
  background-color: var(--neutral-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--neutral-200);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-weight: var(--font-weight-bold);
  font-size: 1.5rem;
  color: var(--neutral-900);
  text-decoration: none;
}

.nav-logo .logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  list-style: none;
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--neutral-600);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-500);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-500);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.bar {
  width: 24px;
  height: 2px;
  background: var(--neutral-600);
  transition: all var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 120px 0 var(--spacing-20);
  background: linear-gradient(135deg, var(--neutral-0) 0%, var(--primary-50) 100%);
  overflow: hidden;
}

.hero-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  background: var(--primary-100);
  color: var(--primary-700);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-6);
  border: 1px solid var(--primary-200);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: var(--font-weight-extrabold);
  line-height: 1.1;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-6);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--neutral-600);
  margin-bottom: var(--spacing-8);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-12);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-8);
}

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

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary-500);
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--neutral-600);
  margin-top: var(--spacing-1);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.phone-mockup {
  position: relative;
  width: 300px;
  height: 600px;
  background: var(--neutral-800);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-2xl);
}

.app-screenshot {
  width: 100%;
  height: 100%;
  border-radius: 28px;
  object-fit: cover;
}

.sos-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: var(--primary-500);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.3);
    opacity: 0.7;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

/* ===== TRUST INDICATORS ===== */
.trust {
  padding: var(--spacing-8) 0;
  background: var(--neutral-0);
  border-top: 1px solid var(--neutral-200);
}

.trust-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-8);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--neutral-600);
  font-weight: var(--font-weight-medium);
}

.trust-item i {
  color: var(--primary-500);
}

/* ===== FEATURES SECTION ===== */
.features {
  padding: var(--spacing-24) 0;
  background: var(--neutral-0);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  font-size: 3rem;
  font-weight: var(--font-weight-bold);
  color: var(--neutral-900);
  margin-bottom: var(--spacing-4);
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--neutral-600);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.feature-card {
  background: var(--neutral-0);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--neutral-200);
  transition: all var(--transition-normal);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-200);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-200) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-6);
  color: var(--primary-600);
  font-size: 2rem;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--neutral-900);
  margin-bottom: var(--spacing-4);
}

.feature-description {
  color: var(--neutral-600);
  line-height: 1.7;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
  padding: var(--spacing-24) 0;
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--neutral-0) 100%);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-12);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--primary-500);
  color: var(--neutral-0);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-6);
  box-shadow: var(--shadow-md);
}

.step-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--neutral-900);
  margin-bottom: var(--spacing-4);
}

.step-description {
  color: var(--neutral-600);
  line-height: 1.7;
}

/* ===== FOUNDATION SECTION ===== */
.foundation {
  padding: var(--spacing-24) 0;
  background: var(--neutral-0);
}

.foundation-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.foundation-description {
  font-size: 1.125rem;
  color: var(--neutral-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-8);
}

.foundation-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.foundation-mission {
  background: var(--primary-50);
  padding: var(--spacing-6);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-500);
}

.foundation-mission h3 {
  color: var(--primary-700);
  margin-bottom: var(--spacing-3);
}

.foundation-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

/* ===== WAITLIST SECTION ===== */
.waitlist {
  padding: var(--spacing-24) 0;
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  color: var(--neutral-0);
}

.waitlist-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.waitlist-title {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.waitlist-subtitle {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

/* Form Styles */
.waitlist-form {
  background: var(--neutral-0);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--spacing-4) var(--spacing-5);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-family);
  transition: all var(--transition-fast);
  background: var(--neutral-0);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(255, 59, 59, 0.1);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-6);
  text-align: left;
}

.form-checkbox input[type="checkbox"] {
  margin-top: 4px;
  transform: scale(1.2);
  accent-color: var(--primary-500);
}

.form-checkbox label {
  color: var(--neutral-600);
  font-size: 0.875rem;
  line-height: 1.6;
}

.form-checkbox a {
  color: var(--primary-500);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.form-checkbox a:hover {
  text-decoration: underline;
}

/* Success Message */
.waitlist-success {
  background: var(--success-light);
  color: var(--success-main);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  text-align: center;
}

.success-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-4);
}

.waitlist-success h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-3);
}

.waitlist-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.info-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  font-size: 0.875rem;
}

.info-item i {
  color: var(--primary-200);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-6);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-family);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-500);
  color: var(--neutral-0);
}

.btn-primary:hover {
  background: var(--primary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--neutral-0);
  color: var(--neutral-700);
  border: 2px solid var(--neutral-300);
}

.btn-secondary:hover {
  border-color: var(--primary-500);
  color: var(--primary-500);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
  font-size: 1.125rem;
  padding: var(--spacing-5) var(--spacing-6);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--neutral-900);
  color: var(--neutral-300);
  padding: var(--spacing-20) 0 var(--spacing-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-weight: var(--font-weight-bold);
  font-size: 1.5rem;
  color: var(--neutral-0);
  margin-bottom: var(--spacing-4);
}

.footer-logo .logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.footer-description {
  margin-bottom: var(--spacing-6);
  line-height: 1.6;
}

.social-links {
  display: flex;
  gap: var(--spacing-3);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--neutral-800);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neutral-400);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--primary-500);
  color: var(--neutral-0);
}

.footer-title {
  color: var(--neutral-0);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-3);
}

.footer-links a {
  color: var(--neutral-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-500);
}

.footer-bottom {
  border-top: 1px solid var(--neutral-800);
  padding-top: var(--spacing-8);
  text-align: center;
}

.footer-copyright {
  margin-bottom: var(--spacing-4);
  color: var(--neutral-500);
}

.footer-disclaimer {
  font-size: 0.875rem;
  color: var(--neutral-600);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
    text-align: center;
  }

  .foundation-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
  }

  .trust-container {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: var(--spacing-4);
  }

  .nav-menu {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    padding: 100px 0 var(--spacing-16);
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    justify-content: center;
    gap: var(--spacing-6);
  }

  .trust-container {
    flex-direction: column;
    gap: var(--spacing-4);
  }

  .section-title {
    font-size: 2.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .steps {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }

  .foundation-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .waitlist-info {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .phone-mockup {
    width: 250px;
    height: 500px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .waitlist-title {
    font-size: 2rem;
  }

  .feature-card,
  .waitlist-form {
    padding: var(--spacing-6);
  }

  .phone-mockup {
    width: 200px;
    height: 400px;
  }
}

/* ===== 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;
  }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav-link:focus,
.form-input:focus,
.form-select:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-500: #CC0000;
    --neutral-600: #333333;
    --neutral-300: #666666;
  }
}