/* ========================================
   MODERN THEME - PREMIUM SaaS STYLE UI/UX
   ======================================== */

/* ========== 1. ROOT VARIABLES & COLORS ========== */
:root {
  /* Primary Colors */
  --primary-gradient: linear-gradient(135deg, #7409f6 0%, #0066cc 100%);
  --primary-color: #7409f6;
  --primary-dark: #5a00cc;
  --primary-light: #8b2be2;

  /* Secondary Colors */
  --secondary-color: #0066cc;
  --accent-color: #00d4ff;
  --accent-warm: #ff6b6b;

  /* Neutral Colors */
  --title-color: #0f172a;
  --text-color: #475569;
  --text-muted: #94a3b8;
  --bg-light: #f8fafc;
  --bg-lighter: #f1f5f9;
  --border-color: #e2e8f0;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);

  /* Success/Error Colors */
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --info-color: #3b82f6;

  /* Typography */
  --font-primary:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Inria Sans", sans-serif;
  --font-mono: "Fira Code", "Courier New", monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

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

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slowest: 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ========== 2. GLOBAL RESET & BASE ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ========== 3. TYPOGRAPHY ========== */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--title-color);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover {
  color: var(--primary-dark);
}

/* ========== 4. BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-primary);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition:
    width var(--transition-base),
    height var(--transition-base);
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* Primary Button */
.btn-primary {
  background: var(--primary-gradient);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(116, 9, 246, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
  background: var(--bg-lighter);
  color: var(--primary-color);
  border: 2px solid var(--border-color);
}

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

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

/* Soft Button */
.btn-soft {
  background: rgba(116, 9, 246, 0.1);
  color: var(--primary-color);
  border: 1px solid rgba(116, 9, 246, 0.2);
}

.btn-soft:hover {
  background: rgba(116, 9, 246, 0.15);
  border-color: rgba(116, 9, 246, 0.3);
}

/* Size Variants */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ========== 5. FORM ELEMENTS ========== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--title-color);
  margin-bottom: var(--spacing-sm);
}

.form-label .required {
  color: var(--error-color);
  margin-left: 2px;
}

/* Input Fields */
.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--white);
  color: var(--title-color);
  transition: all var(--transition-base);
  appearance: none;
}

.form-control:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(116, 9, 246, 0.1);
}

.form-control::placeholder {
  color: var(--text-muted);
}

/* Textarea */
textarea {
  resize: vertical;
  min-height: 120px;
}

/* Select Styling */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: 2.5rem;
}

/* Floating Labels */
.floating-group {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.floating-group input,
.floating-group textarea,
.floating-group select {
  padding-top: 1.5rem;
  padding-bottom: var(--spacing-sm);
}

.floating-label {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  background: var(--white);
  padding: 0 var(--spacing-sm);
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  pointer-events: none;
}

.floating-group input:focus ~ .floating-label,
.floating-group input:not(:placeholder-shown) ~ .floating-label {
  top: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--primary-color);
  font-weight: 600;
}

/* Form Validation */
.form-control.is-invalid,
input.is-invalid {
  border-color: var(--error-color);
}

.form-control.is-invalid:focus,
input.is-invalid:focus {
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.form-error {
  color: var(--error-color);
  font-size: 0.85rem;
  margin-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-success {
  color: var(--success-color);
  font-size: 0.85rem;
  margin-top: var(--spacing-sm);
}

/* ========== 6. CARDS ========== */
.card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: rgba(116, 9, 246, 0.2);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
  margin: calc(-1 * var(--spacing-xl)) calc(-1 * var(--spacing-xl))
    var(--spacing-xl);
}

.card-body {
  padding: var(--spacing-xl);
}

.card-footer {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
  margin: var(--spacing-xl) calc(-1 * var(--spacing-xl))
    calc(-1 * var(--spacing-xl));
}

/* Elevated Card */
.card-elevated {
  box-shadow: var(--shadow-md);
  border: none;
}

.card-elevated:hover {
  box-shadow: var(--shadow-xl);
}

/* ========== 7. ALERTS ========== */
.alert {
  padding: var(--spacing-lg) var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  animation: slideInDown 0.3s ease-out;
}

.alert-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #047857;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #991b1b;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  color: #92400e;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: #1e40af;
}

/* ========== 8. BADGES & TAGS ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--bg-lighter);
  color: var(--text-color);
  width: fit-content;
}

.badge-primary {
  background: rgba(116, 9, 246, 0.1);
  color: var(--primary-color);
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
}

.badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning-color);
}

.badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: currentColor;
}

/* ========== 9. ANIMATIONS ========== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

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

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-slowest) ease-out;
}

.animate-slide-in-down {
  animation: slideInDown var(--transition-slow) ease-out;
}

.animate-bounce {
  animation: bounce 1s ease-in-out infinite;
}

/* ========== 10. CONTAINERS & LAYOUT ========== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-sm {
  max-width: 640px;
}

.container-md {
  max-width: 896px;
}

.container-lg {
  max-width: 1152px;
}

.container-xl {
  max-width: 1408px;
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-content {
  flex: 1;
}

/* ========== 11. GRID & FLEX ========== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  flex-direction: column;
}

/* ========== 12. SPACING UTILITIES ========== */
.mt-0 {
  margin-top: 0;
}
.mt-sm {
  margin-top: var(--spacing-sm);
}
.mt-md {
  margin-top: var(--spacing-md);
}
.mt-lg {
  margin-top: var(--spacing-lg);
}
.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-0 {
  margin-bottom: 0;
}
.mb-sm {
  margin-bottom: var(--spacing-sm);
}
.mb-md {
  margin-bottom: var(--spacing-md);
}
.mb-lg {
  margin-bottom: var(--spacing-lg);
}
.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.pt-lg {
  padding-top: var(--spacing-lg);
}
.pb-lg {
  padding-bottom: var(--spacing-lg);
}
.px-lg {
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}
.py-lg {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
}

/* ========== 13. RESPONSIVE BREAKPOINTS ========== */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.5rem;
  }
  h3 {
    font-size: 1.25rem;
  }

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

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

/* ========== 14. UTILITY CLASSES ========== */
.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.opacity-50 {
  opacity: 0.5;
}

.opacity-75 {
  opacity: 0.75;
}

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

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

.text-muted {
  color: var(--text-muted);
}

.text-primary {
  color: var(--primary-color);
}

.text-success {
  color: var(--success-color);
}

.text-error {
  color: var(--error-color);
}

.font-bold {
  font-weight: 700;
}

.font-semibold {
  font-weight: 600;
}

.font-normal {
  font-weight: 400;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========== 15. SCROLLBAR STYLING ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-lighter);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ========== 16. BACKDROP & MODALS ========== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: none;
  z-index: 1000;
  animation: fadeIn var(--transition-fast);
}

.modal-backdrop.active {
  display: block;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  max-height: 90vh;
  overflow-y: auto;
  animation: slideInUp var(--transition-slowest) ease-out;
}

/* ========== 17. SPINNER & LOADERS ========== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* ========== 18. BREADCRUMB ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.breadcrumb-item {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.breadcrumb-item.active {
  color: var(--title-color);
  font-weight: 600;
}

.breadcrumb-item a {
  color: var(--primary-color);
}

.breadcrumb-item:not(:last-child)::after {
  content: "/";
  margin-left: var(--spacing-md);
  color: var(--border-color);
}

/* ========== 19. DIVIDER ========== */
.divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-lg) 0;
}

.divider-vertical {
  width: 1px;
  background: var(--border-color);
  height: 100%;
}

/* ========== 20. HERO SECTION ========== */
.hero {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 6rem var(--spacing-lg) 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(
    circle,
    rgba(116, 9, 246, 0.1) 0%,
    transparent 70%
  );
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(0, 102, 204, 0.1) 0%,
    transparent 70%
  );
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-color);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}