/* ================================================
   BluePaste - Advanced CSS Framework
   Modern, responsive, and feature-rich stylesheet
   ================================================ */

/* CSS Custom Properties (CSS Variables) */
:root {
  /* Brand Colors */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* Semantic Colors - Light Theme */
  --background: #ffffff;
  --surface: #f8fafc;
  --surface-hover: #f1f5f9;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Status Colors */
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --info: #3b82f6;
  --info-bg: #eff6ff;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Monaco", "Inconsolata", "Roboto Mono", "Fira Code",
    monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* 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 ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --background: #0f172a;
  --surface: #1e293b;
  --surface-hover: #334155;
  --border: #334155;
  --border-light: #475569;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;

  --success-bg: #064e3b;
  --warning-bg: #451a03;
  --error-bg: #450a0a;
  --info-bg: #1e3a8a;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background);
  transition: background-color var(--transition-normal),
    color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Focus Management */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Text Selection */
::selection {
  background-color: var(--primary-200);
  color: var(--primary-800);
}

::-moz-selection {
  background-color: var(--primary-200);
  color: var(--primary-800);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}

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

/* Container and Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Navigation */
.navbar {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.nav-brand {
  display: flex;
  align-items: center;
}

.nav-brand a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--font-size-lg);
  transition: color var(--transition-fast);
}

.nav-brand a:hover {
  color: var(--primary-600);
}

.logo {
  transition: transform var(--transition-fast);
}

.nav-brand a:hover .logo {
  transform: scale(1.05);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--background);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
}

.theme-toggle:hover {
  background-color: var(--surface-hover);
  border-color: var(--primary-300);
  transform: scale(1.05);
}

/* Hero Section */
.hero {
  padding: var(--space-16) 0 var(--space-12);
  text-align: center;
  background: linear-gradient(
    135deg,
    var(--primary-50) 0%,
    var(--background) 100%
  );
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .hero {
  background: linear-gradient(
    135deg,
    var(--primary-900) 0%,
    var(--background) 100%
  );
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%233b82f6' fill-opacity='0.02'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.hero-emoji {
  font-size: var(--font-size-5xl);
  animation: float 3s ease-in-out infinite;
}

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

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.hero-feature {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.hero-feature:hover {
  background-color: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-700);
  transform: translateY(-2px);
}

[data-theme="dark"] .hero-feature:hover {
  background-color: var(--primary-900);
  border-color: var(--primary-700);
  color: var(--primary-300);
}

#code-container {
  position: relative;
  background: rgba(255, 255, 255, 0.07); /* شفافية خفيفة */
  backdrop-filter: blur(12px); /* تمويه خلفي */
  -webkit-backdrop-filter: blur(12px);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #e0e0e0;
  font-family: "Fira Code", monospace, monospace;
  font-size: 15px;
  padding: 1.25rem;
  overflow-x: auto;
  white-space: pre;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  transition: background 0.3s ease;
}

/* Word wrap enabled */
#code-container.word-wrap {
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Hide line numbers */
#code-container.hide-line-numbers {
  counter-reset: none;
}

/* Fullscreen modal with glass effect */
.fullscreen-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 9999;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  border-radius: 0;
}

/* When fullscreen active */
body.fullscreen-active {
  overflow: hidden;
}

/* Toast notifications with glassmorphism */
.toast {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #f0f0f0;
  border-radius: 10px;
  padding: 0.75rem 1.25rem;
  margin-bottom: 0.6rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast-success {
  color: #a4f9a4;
  border-color: rgba(100, 255, 100, 0.3);
  box-shadow: 0 4px 20px rgba(100, 255, 100, 0.4);
}

.toast-error {
  color: #ff6f6f;
  border-color: rgba(255, 100, 100, 0.3);
  box-shadow: 0 4px 20px rgba(255, 100, 100, 0.4);
}

.toast-info {
  color: #80c7ff;
  border-color: rgba(100, 150, 255, 0.3);
  box-shadow: 0 4px 20px rgba(100, 150, 255, 0.4);
}

.toast-icon {
  font-size: 1.3rem;
  user-select: none;
}

.toast-message {
  flex-grow: 1;
  user-select: text;
}

.toast-close {
  background: transparent;
  border: none;
  color: inherit;
  font-weight: bold;
  cursor: pointer;
  font-size: 1.3rem;
  padding: 0;
  line-height: 1;
  transition: color 0.2s ease;
}

.toast-close:hover {
  color: #ff4b4b;
}

/* Buttons glass style */
button,
.btn {
  cursor: pointer;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #e0e0e0;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 0.5rem 1.25rem;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.25s ease, border-color 0.25s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

button:hover,
.btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn-primary {
  background: rgba(0, 123, 255, 0.25);
  border-color: rgba(0, 123, 255, 0.5);
  color: #d0e8ff;
}

.btn-primary:hover {
  background: rgba(0, 123, 255, 0.45);
  border-color: rgba(0, 123, 255, 0.9);
  color: #fff;
}

.btn-secondary {
  background: rgba(108, 117, 125, 0.25);
  border-color: rgba(108, 117, 125, 0.5);
  color: #ccc;
}

.btn-secondary:hover {
  background: rgba(108, 117, 125, 0.45);
  border-color: rgba(108, 117, 125, 0.9);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(0, 123, 255, 0.6);
  color: rgba(0, 123, 255, 0.8);
}

.btn-outline:hover {
  background: rgba(0, 123, 255, 0.6);
  color: #fff;
}

/* Accessibility focus outline */
button:focus,
.btn:focus {
  outline: 2px solid #4d90fe;
  outline-offset: 3px;
}

/* Scrollbar for code container (for modern browsers) */
#code-container::-webkit-scrollbar {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
}

#code-container::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
}

#code-container::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

.line-numbers {
  display: none !important;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--space-12) 0 var(--space-8);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
    flex-direction: column;
    gap: var(--space-2);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
}

/* Form Styles */
.paste-section {
  padding: var(--space-12) 0;
}

.paste-form-container {
  max-width: 900px;
  margin: 0 auto;
}

.paste-form {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
}

.label-icon {
  font-size: var(--font-size-base);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--background);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

[data-theme="dark"] .form-control:focus {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 1rem;
  padding-right: var(--space-10);
  appearance: none;
}

.textarea-container {
  position: relative;
}

.content-input {
  min-height: 400px;
  resize: vertical;
  font-family: var(--font-mono);
  line-height: 1.5;
  tab-size: 2;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.textarea-overlay {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 1;
}

.line-numbers {
  padding: var(--space-3) var(--space-2);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  text-align: right;
  user-select: none;
  border-right: 1px solid var(--border-light);
  background-color: var(--surface);
}

.form-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2);
}

.form-help {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

.char-counter {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  font-family: var(--font-mono);
  font-weight: 500;
}

.char-counter.warning {
  color: var(--warning);
}

.char-counter.error {
  color: var(--error);
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
  font-family: inherit;
}

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

.btn-primary {
  background-color: var(--primary-600);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-700);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--surface-hover);
  border-color: var(--primary-300);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-600);
  border-color: var(--primary-600);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--primary-50);
  color: var(--primary-700);
}

[data-theme="dark"] .btn-outline:hover:not(:disabled) {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
}

.btn-icon {
  font-size: var(--font-size-base);
}

.btn-spinner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-light);
}

@media (max-width: 640px) {
  .form-actions {
    flex-direction: column;
  }

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

/* Preview Styles */
.preview-container {
  margin-top: var(--space-8);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  background-color: var(--surface-hover);
  border-bottom: 1px solid var(--border);
}

.preview-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.preview-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: var(--radius-md);
  background-color: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preview-close:hover {
  background-color: var(--error-bg);
  color: var(--error);
}

.preview-content {
  padding: var(--space-6);
  max-height: 500px;
  overflow: auto;
}

.preview-content pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Result Styles */
.result-container {
  margin-top: var(--space-8);
  background: linear-gradient(
    135deg,
    var(--success-bg) 0%,
    var(--surface) 100%
  );
  border: 1px solid var(--success);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.5s ease-out;
}

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

.result-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.result-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--success);
  margin-bottom: var(--space-2);
}

.result-subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

.result-urls {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.url-group {
  display: grid;
  gap: var(--space-2);
}

.url-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.url-input-group {
  display: flex;
  gap: var(--space-2);
}

.url-input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--background);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.url-input:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.copy-btn {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--surface);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.copy-btn:hover {
  background-color: var(--primary-50);
  border-color: var(--primary-300);
  color: var(--primary-700);
}

[data-theme="dark"] .copy-btn:hover {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.copy-btn.copied {
  background-color: var(--success-bg);
  border-color: var(--success);
  color: var(--success);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .result-actions {
    flex-direction: column;
  }
}

/* Features Section */
.features {
  padding: var(--space-16) 0;
  background-color: var(--surface);
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.features-title {
  text-align: center;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-12);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

.feature-card {
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(59, 130, 246, 0.1),
    transparent
  );
  transition: left 0.5s ease;
}

.feature-card:hover::before {
  left: 100%;
}

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

.feature-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
  display: block;
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

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

/* Tips Section */
.tips {
  padding: var(--space-12) 0;
}

.tips-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.tips-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-8);
}

.tips-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}

.tip-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.tip-item:hover {
  background-color: var(--surface-hover);
  border-color: var(--primary-200);
}

.tip-key {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-600);
  background-color: var(--primary-50);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  display: inline-block;
}

[data-theme="dark"] .tip-key {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.tip-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Error Pages */
.error-section {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) 0;
}

.error-container {
  max-width: 600px;
  text-align: center;
}

.error-content {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.error-visual {
  position: relative;
  margin-bottom: var(--space-6);
}

.error-icon {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-4);
  display: block;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  20%,
  53%,
  80%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  40%,
  43% {
    transform: translate3d(0, -10px, 0);
  }
  70% {
    transform: translate3d(0, -5px, 0);
  }
  90% {
    transform: translate3d(0, -2px, 0);
  }
}

.error-animation {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.error-pulse {
  width: 100px;
  height: 100px;
  border: 2px solid var(--primary-300);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.error-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.error-message {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.error-suggestions {
  text-align: left;
  margin-bottom: var(--space-8);
  padding: var(--space-6);
  background-color: var(--background);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

.suggestions-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.suggestions-list {
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.suggestions-list li {
  position: relative;
  padding-left: var(--space-6);
  color: var(--text-secondary);
}

.suggestions-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary-500);
  font-weight: bold;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

.error-footer {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-light);
}

.help-section {
  margin-bottom: var(--space-6);
}

.help-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.help-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.help-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--primary-600);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.help-link:hover {
  background-color: var(--primary-50);
  color: var(--primary-700);
}

[data-theme="dark"] .help-link:hover {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.error-timestamp {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  font-family: var(--font-mono);
}

/* Paste View Styles */
.paste-header {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-lg);
}

.paste-meta {
  margin-bottom: var(--space-6);
}

.paste-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.paste-id {
  font-family: var(--font-mono);
  background-color: var(--primary-50);
  color: var(--primary-700);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-lg);
}

[data-theme="dark"] .paste-id {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.meta-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: var(--background);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.meta-icon {
  font-size: var(--font-size-base);
}

.meta-label {
  color: var(--text-muted);
  font-weight: 500;
}

.meta-value {
  color: var(--text-primary);
  font-weight: 600;
}

.paste-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--background);
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.action-btn:hover {
  background-color: var(--primary-50);
  border-color: var(--primary-300);
  color: var(--primary-700);
  transform: translateY(-1px);
}

[data-theme="dark"] .action-btn:hover {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.action-icon {
  font-size: var(--font-size-base);
}

/* QR Code Styles */
.qr-container {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: slideDown 0.3s ease-out;
}

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

.qr-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  background-color: var(--surface-hover);
  border-bottom: 1px solid var(--border);
}

.qr-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.qr-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: var(--radius-md);
  background-color: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.qr-close:hover {
  background-color: var(--error-bg);
  color: var(--error);
}

.qr-body {
  padding: var(--space-6);
  text-align: center;
}

.qr-image {
  max-width: 200px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-md);
}

.qr-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.qr-actions {
  display: flex;
  justify-content: center;
}

/* Code Display Styles */
.paste-content {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-6);
}

.content-wrapper {
  position: relative;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  background-color: var(--surface-hover);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.content-controls {
  display: flex;
  gap: var(--space-2);
}

.control-btn {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--background);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.control-btn:hover {
  background-color: var(--primary-50);
  border-color: var(--primary-300);
  color: var(--primary-700);
}

[data-theme="dark"] .control-btn:hover {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.control-btn.active {
  background-color: var(--primary-500);
  border-color: var(--primary-500);
  color: var(--text-inverse);
}

.control-icon {
  font-size: var(--font-size-sm);
}

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

.language-badge {
  padding: var(--space-1) var(--space-3);
  background-color: var(--primary-50);
  color: var(--primary-700);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

[data-theme="dark"] .language-badge {
  background-color: var(--primary-900);
  color: var(--primary-300);
}

.code-container {
  position: relative;
  overflow: auto;
  max-height: 80vh;
}

.code-block {
  margin: 0;
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  background-color: var(--background);
  color: var(--text-primary);
  white-space: pre;
  word-wrap: normal;
  overflow-wrap: normal;
  tab-size: 2;
}

.code-block.wrap {
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.code-block.line-numbers {
  padding-left: calc(var(--space-16) + var(--space-6));
  counter-reset: line;
}

.code-block.line-numbers::before {
  content: counter(line);
  counter-increment: line;
  position: absolute;
  left: 0;
  top: 0;
  width: var(--space-16);
  padding: var(--space-6) var(--space-2);
  color: var(--text-muted);
  text-align: right;
  background-color: var(--surface);
  border-right: 1px solid var(--border-light);
  user-select: none;
  white-space: pre;
  line-height: 1.6;
}

/* Fullscreen Modal */
.fullscreen-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--background);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fullscreen-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
}

.fullscreen-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.fullscreen-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--background);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
}

.fullscreen-close:hover {
  background-color: var(--error-bg);
  border-color: var(--error);
  color: var(--error);
}

.fullscreen-content {
  flex: 1;
  overflow: auto;
  padding: var(--space-6);
}

.fullscreen-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  color: var(--text-primary);
}

/* Footer Styles */
.paste-footer {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.footer-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-light);
}

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

.share-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.share-urls {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.social-share {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-light);
}

.social-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.social-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background-color: var(--background);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
}

.social-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.social-btn[data-platform="twitter"]:hover {
  background-color: #1da1f2;
  border-color: #1da1f2;
  color: white;
}

.social-btn[data-platform="telegram"]:hover {
  background-color: #0088cc;
  border-color: #0088cc;
  color: white;
}

.social-btn[data-platform="whatsapp"]:hover {
  background-color: #25d366;
  border-color: #25d366;
  color: white;
}

.social-icon {
  font-size: var(--font-size-base);
}

/* Main Footer */
.footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-8) 0;
  margin-top: var(--space-16);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  text-align: center;
}

.footer-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-700);
}

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

/* Main Content Layout */
.main-content {
  min-height: calc(100vh - 4rem);
  padding-bottom: var(--space-16);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-4);
  }

  .paste-form {
    padding: var(--space-6);
  }

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

  .content-header {
    flex-direction: column;
    align-items: stretch;
  }

  .content-controls {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: var(--space-8) 0 var(--space-6);
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .hero-features {
    justify-content: center;
    gap: var(--space-2);
  }

  .hero-feature {
    font-size: var(--font-size-xs);
    padding: var(--space-1) var(--space-3);
  }

  .paste-form {
    padding: var(--space-4);
  }

  .content-input {
    min-height: 300px;
  }

  .form-actions {
    flex-direction: column;
  }

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

  .paste-actions {
    justify-content: center;
  }

  .action-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
  }

  .footer-actions {
    flex-direction: column;
  }

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

  .social-btn {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--space-3);
  }

  .nav-brand span {
    display: none;
  }

  .container {
    padding: 0 var(--space-3);
  }

  .paste-form {
    padding: var(--space-3);
  }

  .paste-header {
    padding: var(--space-4);
  }

  .paste-title {
    font-size: var(--font-size-xl);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

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

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

  .url-input-group {
    flex-direction: column;
  }

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

/* Print Styles */
@media print {
  .navbar,
  .hero,
  .features,
  .tips,
  .footer,
  .paste-actions,
  .content-controls,
  .form-actions,
  .error-actions,
  .result-actions,
  .social-share {
    display: none !important;
  }

  .main-content {
    padding: 0;
  }

  .paste-content,
  .paste-form,
  .error-container {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .code-block {
    font-size: 10pt;
    line-height: 1.4;
  }

  body {
    font-size: 12pt;
    line-height: 1.4;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --text-muted: #333333;
  }

  [data-theme="dark"] {
    --border: #ffffff;
    --text-muted: #cccccc;
  }
}

/* Reduced Motion */
@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 Better Accessibility */
.btn:focus-visible,
.form-control:focus-visible,
.action-btn:focus-visible,
.copy-btn:focus-visible,
.social-btn:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

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

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

/* Smooth Transitions for Theme Switching */
* {
  transition: background-color var(--transition-normal),
    border-color var(--transition-normal), color var(--transition-normal);
}

/* End of BluePaste CSS Framework */