/* Global Styles for Study Mentorship Platform */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --secondary-color: #64748b;
  --accent-color: #06b6d4;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --background-color: #ffffff;
  --background-secondary: #f8fafc;
  --background-dark: #0f172a;
  --card-background: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
}

html {
  scroll-behavior: smooth;
}

/* Layout Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.header {
  background: var(--card-background);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  transition: transform 0.2s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}

.nav-links a:hover {
  color: var(--primary-color);
  transform: translateY(-1px);
}

.nav-links a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

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

.hero-modern {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--background-dark) 0%, #1e293b 100%);
  color: var(--text-white);
  overflow: hidden;
}

.hero-modern::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: linear-gradient(rgba(59, 130, 246, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.4s both;
}

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

.stats-section {
  padding: 4rem 0;
  background: var(--background-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.stat-card {
  background: var(--card-background);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  display: block;
}

.stat-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.features-modern {
  padding: 6rem 0;
  background: var(--background-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.feature-card {
  background: var(--card-background);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

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

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  display: block;
  transition: transform 0.3s ease;
}

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

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.cta-section {
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: var(--text-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 30px 30px;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-20px, -20px) rotate(180deg);
  }
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.form-container {
  max-width: 400px;
  margin: 2rem auto;
  background: var(--card-background);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-control,
.form-input,
.form-select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  background-color: white;
  min-height: 44px;
}

.form-control:focus,
.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  transform: translateY(-1px);
}

/* === STYLES ADDED FROM LOGIN.PHP === */
.password-input-group {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #6b7280; /* text-gray-500 */
    transition: color 0.2s ease;
    background: none;
    border: none;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px; /* Slightly larger for easier tapping */
    border-radius: 50%; /* Makes the hover/focus state cleaner */
}

.password-toggle:hover {
    color: #374151; /* text-gray-700 */
    background-color: #f3f4f6; /* bg-gray-100 */
}

.password-toggle:focus {
    outline: 2px solid #3b82f6; /* focus:ring-blue-500 */
    outline-offset: 2px;
}

.password-input-group .form-input {
    /* Ensures text doesn't flow under the button */
    padding-right: 45px; 
}


/* === Form Validation States === */
.form-error-message {
    color: #ef4444; /* text-red-500 */
    font-size: 0.875rem; /* text-sm */
    margin-top: 0.5rem; /* mt-2 */
}

.input-error {
    border-color: #ef4444 !important; /* border-red-500 */
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2); /* Red focus ring */
}
/* === END OF ADDED STYLES === */


.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  min-height: 44px; /* Ensure touch-friendly size */
  white-space: nowrap;
  user-select: none;
}

/* Add this to assets/css/style.css for the light blue button */
.btn-signup-nav {
    /* Base button styles - copy from your .btn or .btn-primary styles */
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;

    /* Light Blue Color */
    background-color: #4dc3ff; /* A nice light blue */
    color: #ffffff; /* White text for contrast */
    border: 2px solid #4dc3ff;
}

.btn-signup-nav:hover {
    background-color: #00bfff; /* Deep sky blue on hover */
    border-color: #00bfff;
    transform: translateY(-2px); /* Slight lift on hover */
}

.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  min-height: 36px;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
  min-height: 52px;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
  z-index: 1;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
  z-index: 1;
}

.btn-secondary:hover {
  background-color: #475569;
  transform: translateY(-1px);
}

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

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

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

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  z-index: 1;
}

.btn-outline:hover {
  background-color: var(--background-secondary);
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-1px);
}

.card {
  background: var(--card-background);
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--background-secondary);
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}
.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
}

.loading {
  opacity: 0.7;
  pointer-events: none;
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Added comprehensive utility classes for better layout control */
/* Spacing Utilities */
.m-0 {
  margin: 0;
}
.m-1 {
  margin: 0.25rem;
}
.m-2 {
  margin: 0.5rem;
}
.m-3 {
  margin: 0.75rem;
}
.m-4 {
  margin: 1rem;
}
.m-5 {
  margin: 1.25rem;
}
.m-6 {
  margin: 1.5rem;
}
.m-8 {
  margin: 2rem;
}

.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: 0.25rem;
}
.mt-2 {
  margin-top: 0.5rem;
}
.mt-3 {
  margin-top: 0.75rem;
}
.mt-4 {
  margin-top: 1rem;
}
.mt-5 {
  margin-top: 1.25rem;
}
.mt-6 {
  margin-top: 1.5rem;
}
.mt-8 {
  margin-top: 2rem;
}

.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: 0.25rem;
}
.mb-2 {
  margin-bottom: 0.5rem;
}
.mb-3 {
  margin-bottom: 0.75rem;
}
.mb-4 {
  margin-bottom: 1rem;
}
.mb-5 {
  margin-bottom: 1.25rem;
}
.mb-6 {
  margin-bottom: 1.5rem;
}
.mb-8 {
  margin-bottom: 2rem;
}

.ml-0 {
  margin-left: 0;
}
.ml-1 {
  margin-left: 0.25rem;
}
.ml-2 {
  margin-left: 0.5rem;
}
.ml-3 {
  margin-left: 0.75rem;
}
.ml-4 {
  margin-left: 1rem;
}
.ml-auto {
  margin-left: auto;
}

.mr-0 {
  margin-right: 0;
}
.mr-1 {
  margin-right: 0.25rem;
}
.mr-2 {
  margin-right: 0.5rem;
}
.mr-3 {
  margin-right: 0.75rem;
}
.mr-4 {
  margin-right: 1rem;
}
.mr-auto {
  margin-right: auto;
}

.mx-0 {
  margin-left: 0;
  margin-right: 0;
}
.mx-1 {
  margin-left: 0.25rem;
  margin-right: 0.25rem;
}
.mx-2 {
  margin-left: 0.5rem;
  margin-right: 0.5rem;
}
.mx-3 {
  margin-left: 0.75rem;
  margin-right: 0.75rem;
}
.mx-4 {
  margin-left: 1rem;
  margin-right: 1rem;
}
.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.my-0 {
  margin-top: 0;
  margin-bottom: 0;
}
.my-1 {
  margin-top: 0.25rem;
  margin-bottom: 0.25rem;
}
.my-2 {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}
.my-3 {
  margin-top: 0.75rem;
  margin-bottom: 0.75rem;
}
.my-4 {
  margin-top: 1rem;
  margin-bottom: 1rem;
}
.my-6 {
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}
.my-8 {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.p-0 {
  padding: 0;
}
.p-1 {
  padding: 0.25rem;
}
.p-2 {
  padding: 0.5rem;
}
.p-3 {
  padding: 0.75rem;
}
.p-4 {
  padding: 1rem;
}
.p-5 {
  padding: 1.25rem;
}
.p-6 {
  padding: 1.5rem;
}
.p-8 {
  padding: 2rem;
}

.pt-0 {
  padding-top: 0;
}
.pt-1 {
  padding-top: 0.25rem;
}
.pt-2 {
  padding-top: 0.5rem;
}
.pt-3 {
  padding-top: 0.75rem;
}
.pt-4 {
  padding-top: 1rem;
}
.pt-6 {
  padding-top: 1.5rem;
}
.pt-8 {
  padding-top: 2rem;
}

.pb-0 {
  padding-bottom: 0;
}
.pb-1 {
  padding-bottom: 0.25rem;
}
.pb-2 {
  padding-bottom: 0.5rem;
}
.pb-3 {
  padding-bottom: 0.75rem;
}
.pb-4 {
  padding-bottom: 1rem;
}
.pb-6 {
  padding-bottom: 1.5rem;
}
.pb-8 {
  padding-bottom: 2rem;
}

.pl-0 {
  padding-left: 0;
}
.pl-1 {
  padding-left: 0.25rem;
}
.pl-2 {
  padding-left: 0.5rem;
}
.pl-3 {
  padding-left: 0.75rem;
}
.pl-4 {
  padding-left: 1rem;
}

.pr-0 {
  padding-right: 0;
}
.pr-1 {
  padding-right: 0.25rem;
}
.pr-2 {
  padding-right: 0.5rem;
}
.pr-3 {
  padding-right: 0.75rem;
}
.pr-4 {
  padding-right: 1rem;
}

.px-0 {
  padding-left: 0;
  padding-right: 0;
}
.px-1 {
  padding-left: 0.25rem;
  padding-right: 0.25rem;
}
.px-2 {
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}
.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}
.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}
.px-6 {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.py-0 {
  padding-top: 0;
  padding-bottom: 0;
}
.py-1 {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}
.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}
.py-3 {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.py-4 {
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.py-6 {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

/* Enhanced flexbox utilities for better layout control */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.flex-row {
  flex-direction: row;
}
.flex-wrap {
  flex-wrap: wrap;
}
.flex-nowrap {
  flex-wrap: nowrap;
}

.items-start {
  align-items: flex-start;
}
.items-center {
  align-items: center;
}
.items-end {
  align-items: flex-end;
}
.items-stretch {
  align-items: stretch;
}

.justify-start {
  justify-content: flex-start;
}
.justify-center {
  justify-content: center;
}
.justify-end {
  justify-content: flex-end;
}
.justify-between {
  justify-content: space-between;
}
.justify-around {
  justify-content: space-around;
}

.flex-1 {
  flex: 1;
}
.flex-auto {
  flex: auto;
}
.flex-none {
  flex: none;
}

.gap-1 {
  gap: 0.25rem;
}
.gap-2 {
  gap: 0.5rem;
}
.gap-3 {
  gap: 0.75rem;
}
.gap-4 {
  gap: 1rem;
}
.gap-5 {
  gap: 1.25rem;
}
.gap-6 {
  gap: 1.5rem;
}
.gap-8 {
  gap: 2rem;
}

/* Typography utilities for consistent text styling */
.text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}
.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}
.text-base {
  font-size: 1rem;
  line-height: 1.5rem;
}
.text-lg {
  font-size: 1.125rem;
  line-height: 1.75rem;
}
.text-xl {
  font-size: 1.25rem;
  line-height: 1.75rem;
}
.text-2xl {
  font-size: 1.5rem;
  line-height: 2rem;
}
.text-3xl {
  font-size: 1.875rem;
  line-height: 2.25rem;
}

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

.text-primary {
  color: var(--text-primary);
}
.text-secondary {
  color: var(--text-secondary);
}
.text-light {
  color: var(--text-light);
}
.text-white {
  color: var(--text-white);
}
.text-success {
  color: var(--success-color);
}
.text-warning {
  color: var(--warning-color);
}
.text-error {
  color: var(--error-color);
}

/* Alert components for better user feedback */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border: 1px solid;
  font-weight: 500;
}

.alert-success {
  background-color: #dcfce7;
  color: #166534;
  border-color: #bbf7d0;
}

.alert-error {
  background-color: #fef2f2;
  color: #dc2626;
  border-color: #fecaca;
}

.alert-warning {
  background-color: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.alert-info {
  background-color: #dbeafe;
  color: #1e40af;
  border-color: #bfdbfe;
}

/* Utility classes for common layout patterns */
.w-full {
  width: 100%;
}
.w-auto {
  width: auto;
}
.h-full {
  height: 100%;
}
.h-auto {
  height: auto;
}

.block {
  display: block;
}
.inline {
  display: inline;
}
.inline-block {
  display: inline-block;
}
.hidden {
  display: none;
}

.relative {
  position: relative;
}
.absolute {
  position: absolute;
}
.fixed {
  position: fixed;
}
.sticky {
  position: sticky;
}

.overflow-hidden {
  overflow: hidden;
}
.overflow-auto {
  overflow: auto;
}
.overflow-scroll {
  overflow: scroll;
}

.rounded {
  border-radius: 0.375rem;
}
.rounded-md {
  border-radius: 0.5rem;
}
.rounded-lg {
  border-radius: 0.75rem;
}
.rounded-xl {
  border-radius: 1rem;
}
.rounded-full {
  border-radius: 9999px;
}

.shadow {
  box-shadow: var(--shadow);
}
.shadow-lg {
  box-shadow: var(--shadow-lg);
}
.shadow-xl {
  box-shadow: var(--shadow-xl);
}
.shadow-none {
  box-shadow: none;
}

/* Fixed z-index hierarchy to prevent overlapping issues */
.modal {
  z-index: 2000;
}

.dropdown {
  z-index: 1500;
}

.tooltip {
  z-index: 3000;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .navbar {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 0;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
    text-align: center;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }

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

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .form-container {
    margin: 1rem;
    padding: 1.5rem;
  }

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

  .section-title {
    font-size: 1.875rem;
  }

  .card-body {
    padding: 1rem;
  }

  .card-header {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .grid {
    gap: 1rem;
  }
}