/* ============================================================================
   TheL4FPRO - Professional Enhanced Styles
   Primary Color: #EC7400
   ============================================================================ */

/* === ROOT VARIABLES === */
:root {
  --brand: #EC7400;
  --brand-dark: #D85F00;
  --brand-light: #FF8A1A;
  --brand-pale: rgba(236, 116, 0, 0.1);
  --brand-semi: rgba(236, 116, 0, 0.2);
  --brand-accent: rgba(236, 116, 0, 0.3);
  
  --bg-primary: #0a0f16;
  --bg-secondary: #0f1c2e;
  --bg-tertiary: #1a2332;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  
  --text-primary: #ffffff;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --text-light: #64748b;
  
  --border: rgba(255, 255, 255, 0.1);
  --border-light: rgba(255, 255, 255, 0.05);
  --border-accent: rgba(236, 116, 0, 0.3);
  --border-hover: rgba(255, 255, 255, 0.2);
  
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.35);
  --shadow-brand: 0 8px 25px rgba(236, 116, 0, 0.35);
  --shadow-glow: 0 0 30px rgba(236, 116, 0, 0.5);
  
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  --blur: blur(20px);
  --blur-sm: blur(10px);
  --blur-lg: blur(40px);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === SELECTION STYLES === */
::selection {
  background: var(--brand-semi);
  color: var(--text-primary);
}

/* === SCROLLBAR === */
::-webkit-scrollbar {
  width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-light);
}

/* === PAGE TRANSITION === */
.page-transition {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .3s ease, visibility .3s ease;
}

.page-transition.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.transition-content {
  text-align: center;
  color: var(--text-primary);
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--brand);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* === NAVIGATION === */
.navbar {
  background: rgba(10, 15, 22, 0.95);
  backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
  border-image: linear-gradient(90deg, var(--brand-pale), var(--border)) 1;
}

.navbar.scrolled {
  background: rgba(10, 15, 22, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.5rem;
  transition: var(--transition);
  position: relative;
}

.nav-logo:hover {
  transform: scale(1.02);
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-brand);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.logo-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.94-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z"/></svg>') center/70% no-repeat;
}

.logo-icon:hover {
  transform: rotate(10deg) scale(1.1);
  box-shadow: var(--shadow-glow);
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  text-decoration: none;
  color: var(--text-muted);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-pale), var(--brand-semi));
  opacity: 0;
  transition: var(--transition);
  z-index: -1;
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand);
  transform: translateY(-2px);
}

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 1;
}

.nav-link i {
  font-size: 1rem;
  opacity: 0.9;
  transition: var(--transition);
}

.nav-link:hover i {
  opacity: 1;
  transform: scale(1.1);
}

.login-btn {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  color: white !important;
  box-shadow: var(--shadow-brand);
  position: relative;
  overflow: hidden;
}

.login-btn::before {
  background: linear-gradient(135deg, var(--brand-light), var(--brand));
}

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.75rem;
  gap: 5px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.hamburger:hover {
  background: var(--brand-pale);
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.025em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  backdrop-filter: var(--blur-sm);
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  opacity: 0;
  transition: var(--transition);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  color: white;
  box-shadow: var(--shadow-brand);
}

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: var(--blur);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 2px solid var(--brand);
}

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

.btn-lg {
  padding: 1.125rem 2.25rem;
  font-size: 1.1rem;
  border-radius: var(--radius-xl);
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

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

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

.btn-loading .fas {
  animation: spin 1s linear infinite;
}

/* === CARDS === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  backdrop-filter: var(--blur);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--brand-accent);
  box-shadow: var(--shadow-xl);
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  padding: 2rem 2rem 0;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 0.75rem 0;
  line-height: 1.2;
}

.card-title i {
  color: var(--brand);
  font-size: 1.25rem;
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  margin: 0;
  line-height: 1.5;
}

.card-content {
  padding: 2rem;
}

/* === FORMS === */
.form-group {
  margin-bottom: 1.75rem;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.form-label i {
  color: var(--brand);
  width: 18px;
  text-align: center;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
  backdrop-filter: var(--blur);
  font-family: inherit;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-pale), var(--shadow);
  background: var(--brand-pale);
  transform: translateY(-1px);
}

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

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1.25rem;
  color: var(--brand);
  font-size: 1rem;
  pointer-events: none;
  z-index: 2;
}

.input-wrapper input {
  padding-left: 3rem;
}

.password-toggle {
  position: absolute;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius);
  transition: var(--transition);
  z-index: 2;
}

.password-toggle:hover {
  color: var(--brand);
  background: var(--brand-pale);
}

.form-actions {
  display: flex;
  gap: 1.25rem;
  justify-content: flex-end;
  align-items: center;
  margin-top: 2.5rem;
}

.form-error {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* === CONTAINERS === */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
  position: relative;
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px var(--brand);
  }
  50% {
    box-shadow: 0 0 20px var(--brand);
  }
}

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

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

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

.animate-pulse {
  animation: pulse 2s infinite;
}

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

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* === UTILITIES === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

.select-none { user-select: none; }
.pointer-events-none { pointer-events: none; }

.hidden { display: none; }
.visible { display: block; }

.overflow-hidden { overflow: hidden; }

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

.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-50 { z-index: 50; }

/* === RESPONSIVE DESIGN === */
@media (max-width: 1024px) {
  .nav-container {
    padding: 1rem 1.5rem;
  }
  
  .container {
    padding: 0 1.5rem;
  }
  
  .card-header,
  .card-content {
    padding: 1.5rem;
  }
  
  .section {
    padding: 3rem 0;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 15, 22, 0.98);
    backdrop-filter: var(--blur);
    flex-direction: column;
    padding: 2rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-xl);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    justify-content: center;
    padding: 1.25rem;
    width: 100%;
    border-radius: var(--radius-xl);
  }
  
  .nav-container {
    padding: 1rem;
  }
  
  .container {
    padding: 0 1rem;
  }
  
  .card-header,
  .card-content {
    padding: 1.25rem;
  }
  
  .form-actions {
    flex-direction: column;
    gap: 1rem;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .section {
    padding: 2rem 0;
  }
}

@media (max-width: 480px) {
  .nav-logo {
    font-size: 1.25rem;
  }
  
  .logo-icon {
    width: 40px;
    height: 40px;
  }
  
  .card-header,
  .card-content {
    padding: 1rem;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
  }
  
  .btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
  }
}

/* === 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;
  }
}

@media (prefers-contrast: high) {
  :root {
    --border: rgba(255, 255, 255, 0.3);
    --border-light: rgba(255, 255, 255, 0.2);
    --border-hover: rgba(255, 255, 255, 0.4);
  }
}

/* Focus styles for accessibility */
*:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* === PRINT STYLES === */
@media print {
  body {
    background: white !important;
    color: black !important;
  }
  
  .navbar,
  .hamburger,
  .page-transition {
    display: none !important;
  }
  
  .card {
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}