/* ==========================================================================
   Rahenan Waitlist - CSS Styles
   Mobile-first, RTL-ready, Accessible
   Kurdish-only version
   ========================================================================== */

/* CSS Custom Properties */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-secondary: #10b981;
  --color-secondary-dark: #059669;
  
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-card: #ffffff;
  
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;
  
  --color-border: #e2e8f0;
  --color-border-focus: var(--color-primary);
  
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-success: #16a34a;
  --color-success-bg: #f0fdf4;
  
  /* Typography */
  --font-family: 'Noto Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --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;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;
  
  /* 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;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* 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);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Container */
  --container-max: 1000px;
  --container-padding: var(--space-4);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: right;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  line-height: var(--line-height-tight);
}

p {
  margin: 0;
}

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

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

ul {
  margin: 0;
  padding: 0;
  padding-right: var(--space-5);
}

li {
  margin-bottom: var(--space-2);
}

img {
  max-width: 100%;
  height: auto;
}

/* Focus Styles for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.language-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.logo-icon {
  font-size: var(--font-size-xl);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 2px solid white;
}

.btn-secondary:hover {
  background: transparent;
  color: white;
  border-color: white;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-xl);
}

.btn-block {
  width: 100%;
}

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

/* Button Loading State */
.btn .btn-loading {
  display: none;
}

.btn.loading .btn-text {
  visibility: hidden;
}

.btn.loading .btn-loading {
  display: block;
  position: absolute;
}

.spinner {
  width: 24px;
  height: 24px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding: var(--space-12) 0 var(--space-16);
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: var(--line-height-relaxed);
}

.hero-note {
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Social Proof
   ========================================================================== */

.social-proof {
  padding: var(--space-5) 0;
  background: var(--color-primary);
  color: white;
}

.proof-text {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
}

.proof-icon {
  font-size: var(--font-size-xl);
}

/* ==========================================================================
   Section Styles
   ========================================================================== */

section {
  scroll-margin-top: 80px; /* Adjust this to match your header height */
}

.section-title {
  font-size: var(--font-size-2xl);
  text-align: center;
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

/* ==========================================================================
   How It Works
   ========================================================================== */

.how-it-works {
  padding: var(--space-16) 0;
  background: var(--color-bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.step-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
}

.step-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

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

.step-number {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-radius: var(--radius-full);
}

.step-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.step-desc {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Demo Section
   ========================================================================== */

.demo-section {
  padding: var(--space-16) 0;
  background: var(--color-bg-alt);
}

.demo-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-top: calc(var(--space-8) * -1);
  margin-bottom: var(--space-8);
}

.demo-card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--color-bg-card);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.demo-step {
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.demo-step:last-child {
  border-bottom: none;
}

.demo-step-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.demo-step-number {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
}

.demo-step-label {
  font-weight: 600;
  color: var(--color-text);
}

/* Demo Photo Placeholder */
.demo-photo-placeholder {
  background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.demo-photo-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.demo-camera-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
  opacity: 0.5;
}

.demo-math-preview {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.math-equation {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
}

.math-question {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* Demo Extracted */
.demo-extracted {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.demo-extracted-text {
  color: var(--color-text);
  line-height: var(--line-height-relaxed);
}

/* Demo Arrow */
.demo-arrow {
  display: flex;
  justify-content: center;
  padding: var(--space-2) 0;
  background: var(--color-bg-card);
}

.demo-arrow svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* Demo Explanation */
.demo-explanation {
  background: var(--color-success-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.demo-explanation-step {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px dashed var(--color-border);
}

.demo-explanation-step:last-of-type {
  margin-bottom: var(--space-4);
}

.explanation-number {
  display: block;
  font-weight: 600;
  color: var(--color-success);
  margin-bottom: var(--space-1);
}

.math-code {
  display: block;
  font-family: monospace;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: white;
  border-radius: var(--radius-sm);
  direction: ltr;
  text-align: center;
}

.demo-answer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-success);
  border-radius: var(--radius-md);
  color: white;
}

.answer-label {
  font-weight: 600;
}

.answer-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  font-family: monospace;
  direction: ltr;
}

.demo-note {
  text-align: center;
  margin-top: var(--space-6);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Features
   ========================================================================== */

.features {
  padding: var(--space-16) 0;
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background: var(--color-bg-card);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  flex-direction: row;
}

.feature-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

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

.feature-content h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}

.feature-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq {
  padding: var(--space-16) 0;
  background: var(--color-bg-alt);
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  transition: background var(--transition-fast);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--color-text-light);
  transition: transform var(--transition-base);
  margin-right: var(--space-4);
}

.faq-item[open] .faq-question::after {
  content: '−';
}

.faq-question:hover {
  background: var(--color-bg-alt);
}

.faq-answer {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Waitlist Form
   ========================================================================== */

.waitlist-section {
  padding: var(--space-16) 0;
  background: var(--color-bg);
}

.waitlist-subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-top: calc(var(--space-8) * -1);
  margin-bottom: var(--space-8);
}

.waitlist-form {
  max-width: 500px;
  margin: 0 auto;
  background: var(--color-bg-card);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

input, select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  transition: all var(--transition-fast);
  text-align: right;
  direction: rtl;
}

input::placeholder {
  color: var(--color-text-muted);
}

input:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Error states */
input.error, select.error {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

input.error:focus, select.error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.error-message {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--space-1);
  min-height: 1.25rem;
}

.form-hint {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-privacy-note {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-5);
  padding: var(--space-3);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

/* Success Message */
.success-message {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
  padding: var(--space-8);
  background: var(--color-success-bg);
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-success);
}

.success-icon {
  font-size: 3.5rem;
  margin-bottom: var(--space-4);
}

.success-message h3 {
  font-size: var(--font-size-xl);
  color: var(--color-success);
  margin-bottom: var(--space-3);
}

.success-main {
  color: var(--color-text);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-6);
}

.success-next {
  text-align: right;
  background: white;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.success-next p {
  margin-bottom: var(--space-3);
}

.success-next ul {
  list-style: none;
  padding: 0;
}

.success-next li {
  padding: var(--space-2) 0;
  color: var(--color-text-light);
}

.success-share {
  font-weight: 500;
  color: var(--color-text);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.mailto-fallback {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-6);
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-section {
  padding: var(--space-16) 0;
  background: var(--color-bg-alt);
}

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

.about-text p {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.about-text p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Final CTA
   ========================================================================== */

.final-cta {
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  text-align: center;
  color: white;
}

.final-cta h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
}

.final-cta p {
  opacity: 0.9;
  margin-bottom: var(--space-8);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: var(--space-12) 0 var(--space-8);
  background: var(--color-text);
  color: var(--color-bg);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.footer-tagline {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  text-align: center;
  margin-bottom: var(--space-6);
}

.footer-links a {
  color: var(--color-bg);
  font-size: var(--font-size-sm);
}

.footer-links a:hover {
  text-decoration: underline;
}

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

.footer-privacy {
  max-width: 500px;
  margin: 0 auto var(--space-6);
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

.footer-copyright {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Privacy Page Styles
   ========================================================================== */

.privacy-page {
  padding: var(--space-12) 0;
  min-height: 100vh;
}

.privacy-content {
  max-width: 700px;
  margin: 0 auto;
}

.privacy-content h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-8);
  text-align: center;
}

.privacy-content h2 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.privacy-content p {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.privacy-content ul {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
}

.privacy-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  color: var(--color-primary);
  font-weight: 500;
}

.privacy-back:hover {
  text-decoration: none;
  color: var(--color-primary-dark);
}

.privacy-date {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Responsive - Tablet and up
   ========================================================================== */

@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-6);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   Responsive - Desktop
   ========================================================================== */

@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-8);
  }
  
  .hero {
    padding: var(--space-20) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-5xl);
  }
  
  .step-card {
    padding: var(--space-10) var(--space-8);
  }
  
  .final-cta h2 {
    font-size: var(--font-size-3xl);
  }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .language-nav,
  .waitlist-section,
  .final-cta {
    display: none;
  }
  
  body {
    color: black;
    background: white;
  }
}

/* ==========================================================================
   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;
  }
}