/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --color-bg: #0e0e10;
  --color-bg-card: #1f1f23;
  --color-text: #efeff1;
  --color-text-muted: #adadb8;
  --color-text-dim: #848494;
  --color-accent: #bf94ff;
  --color-accent-hover: #d4b2ff;
  --color-accent-glow: rgba(191, 148, 255, 0.4);
  --color-success: #00c853;
  --color-border: #2f2f35;
  
  /* Typography */
  --font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-size-base: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 21px;
  --font-size-2xl: 30px;
  --font-size-3xl: 36px;
  --line-height: 1.7;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Layout */
  --container-max-width: 900px;
  --topnav-height: 64px;
  --border-radius: 8px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-height);
  font-size: var(--font-size-base);
  min-height: 100vh;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-lg);
}

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

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

a:hover {
  color: var(--color-accent-hover);
}

/* ===== Layout ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.main {
  margin-top: var(--topnav-height);
}

/* ===== Top Navigation ===== */
.topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(31, 31, 35, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  transition: all var(--transition-normal);
}

.topnav.scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.topnav-left {
  display: flex;
  align-items: center;
}

.topnav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.topnav-brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.topnav-brand:hover {
  color: var(--color-accent);
}

.brand-icon {
  font-size: 24px;
  transition: transform var(--transition-fast);
}

.topnav-brand:hover .brand-icon {
  transform: scale(1.05);
}

.brand-name {
  font-weight: 700;
}

.btn-nav-cta {
  background: var(--color-accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--border-radius);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.btn-nav-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--color-accent-glow);
  color: #fff;
}

.topnav-link {
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
  padding: 8px 12px;
  border-radius: var(--border-radius);
}

.topnav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.topnav-link.active {
  color: var(--color-accent);
  font-weight: 600;
}

.lang-select {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.lang-select:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.lang-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-glow);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 24px;
  cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
  padding: calc(var(--topnav-height) + var(--spacing-lg)) var(--spacing-md) var(--spacing-lg);
  text-align: center;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero .container {
  max-width: 1000px;
}

.hero-pain-hook {
  font-size: 18px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  line-height: 1.4;
  animation: fadeIn var(--transition-normal) 300ms;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.hero-visual {
  margin: var(--spacing-lg) auto var(--spacing-md);
  max-width: 100%;
  transform: scale(1);
  transition: transform var(--transition-slow);
}

.hero-visual:hover {
  transform: scale(1.01);
}

.hero-visual-img {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 10px;
  box-shadow: 
    0 15px 45px rgba(0, 0, 0, 0.4), 
    0 0 0 1px var(--color-border),
    0 0 30px rgba(191, 148, 255, 0.1);
  transition: all var(--transition-slow);
}

.hero-visual-img:hover {
  box-shadow: 
    0 18px 50px rgba(0, 0, 0, 0.45), 
    0 0 0 1px var(--color-accent),
    0 0 40px rgba(191, 148, 255, 0.15);
}

.preview-fallback {
  padding: var(--spacing-2xl);
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 2px dashed var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
}

.hero-visual.preview-error {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(31, 31, 35, 0.8) 0%, rgba(14, 14, 16, 0.9) 100%);
  border-radius: 12px;
  border: 2px dashed var(--color-border);
}

.hero-visual.preview-error::before {
  content: '📋';
  font-size: 64px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.3;
}

.hero-cta-reassurance {
  font-size: 14px;
  color: var(--color-success);
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.hero-microcopy {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-top: var(--spacing-md);
  margin-bottom: 0;
}

.hero-social {
  font-size: 15px;
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: var(--spacing-md);
}

/* ===== New User Guidance ===== */
.new-user-hint {
  background: rgba(191, 148, 255, 0.1);
  border: 1px solid rgba(191, 148, 255, 0.3);
  border-radius: var(--border-radius);
  padding: 12px 20px;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.new-user-text {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
  display: inline;
}

.new-user-link {
  color: var(--color-accent);
  text-decoration: underline;
  margin-left: 8px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.new-user-link:hover {
  color: var(--color-accent-hover);
}

.next-step-hint {
  background: rgba(0, 200, 83, 0.1);
  border: 1px solid rgba(0, 200, 83, 0.3);
  border-radius: var(--border-radius);
  padding: 12px 20px;
  margin-top: var(--spacing-md);
  text-align: center;
}

.next-step-text {
  font-size: 14px;
  color: var(--color-success);
  margin-bottom: 0;
  font-weight: 600;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  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, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 20px var(--color-accent-glow);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 30px var(--color-accent-glow);
}

.btn-primary:active {
  transform: translateY(-1px) scale(1);
}

.btn-hero {
  min-width: 340px;
  padding: 24px 52px;
  font-size: 21px;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: 
    0 10px 30px var(--color-accent-glow),
    0 0 60px rgba(191, 148, 255, 0.3);
  letter-spacing: 0.3px;
  animation: subtlePulse 3s ease-in-out infinite;
}

@keyframes subtlePulse {
  0%, 100% {
    box-shadow: 
      0 10px 30px var(--color-accent-glow),
      0 0 60px rgba(191, 148, 255, 0.3);
  }
  50% {
    box-shadow: 
      0 10px 30px var(--color-accent-glow),
      0 0 70px rgba(191, 148, 255, 0.4);
  }
}

.btn-hero:hover {
  box-shadow: 
    0 14px 40px var(--color-accent-glow),
    0 0 80px rgba(191, 148, 255, 0.5);
  transform: translateY(-4px) scale(1.03);
  animation: none;
}

.btn-secondary {
  background: #5865f2;
  color: #fff;
}

.btn-secondary:hover {
  background: #4752c4;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(88, 101, 242, 0.4);
}

.btn-text {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 14px;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  margin-top: var(--spacing-sm);
  text-decoration: underline;
  transition: all var(--transition-fast);
}

.btn-text:hover {
  color: var(--color-accent-hover);
  transform: translateX(2px);
}

.btn-mark-done {
  display: block;
  width: 100%;
  text-align: center;
}

/* ===== Micro-Feedback ===== */
.micro-feedback {
  position: fixed;
  top: 80px;
  right: var(--spacing-lg);
  background: var(--color-success);
  color: #fff;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  z-index: 1000;
}

.micro-feedback.show {
  opacity: 1;
  transform: translateY(0);
}

.micro-feedback.hide {
  opacity: 0;
  transform: translateY(-10px);
}

/* ===== Quick Start Section ===== */
.quickstart {
  padding: var(--spacing-3xl) var(--spacing-md);
  background: var(--color-bg-card);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: 32px;
  font-weight: 700;
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.step-card {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: 12px;
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.step-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.step-card.active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  background: linear-gradient(135deg, var(--color-bg) 0%, rgba(191, 148, 255, 0.05) 100%);
}

.step-card.active::before {
  transform: scaleX(1);
}

.step-card.completed {
  opacity: 0.7;
  border-color: var(--color-success);
}

.step-card.completed::before {
  background: var(--color-success);
  transform: scaleX(1);
}

.step-card.completed .btn-mark-done {
  display: none;
}

.step-icon {
  font-size: 56px;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-normal);
}

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

.step-card.active .step-icon {
  animation: bounce 1s ease-in-out;
}

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

.step-title {
  margin-bottom: var(--spacing-sm);
  font-size: 20px;
  font-weight: 700;
}

.step-desc {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  font-size: 15px;
}

.btn-step {
  width: 100%;
  margin-bottom: var(--spacing-sm);
}

/* ===== Learn More Section ===== */
.learn-more {
  padding: var(--spacing-3xl) var(--spacing-md);
}

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

.collapsible-item {
  margin-bottom: var(--spacing-md);
}

.collapsible-trigger {
  width: 100%;
  text-align: left;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.collapsible-trigger:hover {
  background: rgba(191, 148, 255, 0.1);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.collapsible-item.open .collapsible-content {
  max-height: 500px;
  padding: var(--spacing-md) var(--spacing-lg);
}

.collapsible-item.open .collapsible-trigger {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

/* ===== Help Section ===== */
.help {
  padding: var(--spacing-3xl) var(--spacing-md);
}

.help-content {
  max-width: 700px;
  margin: var(--spacing-xl) auto 0;
}

.help-item {
  margin-bottom: var(--spacing-xl);
}

.help-item h3 {
  margin-bottom: var(--spacing-sm);
}

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

/* ===== Footer ===== */
.footer {
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin: 0;
}

/* ===== Responsive (Tablet) ===== */
@media (min-width: 768px) {
  .hero-title {
    font-size: 56px;
  }
  
  .hero-pain-hook {
    font-size: 20px;
  }
  
  .hero-subtitle {
    font-size: 19px;
  }
  
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .btn-hero {
    width: auto;
  }
  
  .topnav-right {
    gap: var(--spacing-lg);
  }
}

/* ===== Responsive (Desktop) ===== */
@media (min-width: 1024px) {
  .hero-title {
    font-size: 64px;
  }
  
  .hero-pain-hook {
    font-size: 22px;
  }
  
  .hero-subtitle {
    font-size: 20px;
  }
  
  .hero-visual {
    max-width: 700px;
  }
  
  .hero-visual-img {
    max-width: 650px;
  }
}

/* ===== Mobile Adjustments ===== */
@media (max-width: 767px) {
  .hero {
    min-height: auto;
    padding: calc(var(--topnav-height) + var(--spacing-md)) var(--spacing-md) var(--spacing-md);
  }
  
  .hero-title {
    font-size: 34px;
  }
  
  .hero-pain-hook {
    font-size: 15px;
    letter-spacing: 0.5px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .hero-visual {
    margin: var(--spacing-md) auto var(--spacing-sm);
  }
  
  .hero-visual-img {
    max-width: 100%;
    border-radius: 8px;
  }
  
  .btn-hero {
    width: 100%;
    font-size: 18px;
    padding: 18px 32px;
    min-width: auto;
  }
  
  .micro-feedback {
    left: var(--spacing-md);
    right: var(--spacing-md);
    top: 70px;
  }
  
  .topnav {
    padding: 0 var(--spacing-md);
  }
  
  .topnav-right {
    gap: var(--spacing-sm);
  }
  
  .btn-nav-cta {
    padding: 6px 12px;
    font-size: 13px;
  }
  
  .brand-name {
    display: none;
  }
  
  .topnav-link {
    padding: 6px 8px;
    font-size: 13px;
  }
  
  .step-card {
    padding: var(--spacing-lg);
  }
  
  .step-icon {
    font-size: 48px;
  }
}

/* ===== Premium Notification ===== */
.premium-notification {
  position: fixed;
  top: calc(var(--topnav-height) + var(--spacing-md));
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  z-index: 9999;
  max-width: 600px;
  width: calc(100% - var(--spacing-lg) * 2);
  opacity: 0;
  transition: all var(--transition-normal);
  pointer-events: none;
}

.premium-notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: all;
}

.premium-notification-content {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.premium-notification.success .premium-notification-content {
  border-color: var(--color-success);
  background: linear-gradient(135deg, rgba(0, 200, 83, 0.1) 0%, var(--color-bg-card) 100%);
}

.premium-notification.canceled .premium-notification-content {
  border-color: #ff6b6b;
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, var(--color-bg-card) 100%);
}

.premium-notification-content p {
  margin: 0;
  font-size: var(--font-size-base);
  color: var(--color-text);
  flex: 1;
}

.premium-notification-close {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.premium-notification-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
}

@media (max-width: 768px) {
  .premium-notification {
    top: calc(var(--topnav-height) + var(--spacing-sm));
    width: calc(100% - var(--spacing-md) * 2);
  }
  
  .premium-notification-content {
    padding: var(--spacing-md);
    font-size: 14px;
  }
}

/* ===== Premium Section ===== */
.premium-section {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, rgba(191, 148, 255, 0.05) 0%, rgba(191, 148, 255, 0.02) 100%);
}

.premium-card {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-2xl);
  max-width: 700px;
  margin: 0 auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-normal);
}

.premium-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 12px 32px rgba(191, 148, 255, 0.2);
}

.premium-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.premium-title {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.premium-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height);
  margin: 0;
}

.premium-benefits {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.premium-benefit {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(191, 148, 255, 0.05);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.premium-benefit:hover {
  background: rgba(191, 148, 255, 0.1);
  transform: translateX(4px);
}

.premium-benefit-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.premium-benefit-text {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.4;
}

.premium-cta-container {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.btn-premium {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: var(--color-bg);
  font-size: var(--font-size-lg);
  font-weight: 700;
  padding: var(--spacing-md) var(--spacing-2xl);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 16px rgba(191, 148, 255, 0.3);
  width: 100%;
  max-width: 400px;
}

.btn-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(191, 148, 255, 0.4);
}

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

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

.premium-microcopy {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-top: var(--spacing-md);
  margin-bottom: 0;
}

.premium-message {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  font-size: var(--font-size-base);
  animation: slideDown var(--transition-normal);
}

.premium-message-error {
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid #ff6b6b;
  color: #ff6b6b;
}

.premium-message-missing {
  background: rgba(255, 193, 7, 0.1);
  border: 1px solid #ffc107;
  color: #ffc107;
}

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

@media (max-width: 768px) {
  .premium-section {
    padding: var(--spacing-2xl) 0;
  }
  
  .premium-card {
    padding: var(--spacing-xl);
  }
  
  .premium-title {
    font-size: var(--font-size-xl);
  }
  
  .premium-benefit {
    padding: var(--spacing-sm);
  }
  
  .btn-premium {
    font-size: var(--font-size-base);
    padding: var(--spacing-md) var(--spacing-lg);
  }
}