/* ═══════════════════════════════════════════════════════════════════════════
   PrismMTR — Download Page Stylesheet
   Premium Glassmorphism 2.0 Design
   ═══════════════════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════════════════
   DOWNLOAD PAGE LAYOUT
   ═══════════════════════════════════════════════════════════════════════════ */

.download-page {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  padding: calc(var(--header-height) + 48px) var(--content-padding) 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-hero {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

.download-hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* ═══════════════════════════════════════════════════════════════════════════
   VERSION BADGE
   ═══════════════════════════════════════════════════════════════════════════ */

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--color-success);
  margin-bottom: 32px;
  animation: fadeInUp 0.6s var(--ease-out-expo) both;
}

.version-badge__dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

.version-badge__text {
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════════════════════════
   HERO TITLE
   ═══════════════════════════════════════════════════════════════════════════ */

.download-hero__title {
  margin-bottom: 20px;
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.1s both;
}

.download-hero__title-small {
  display: block;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.download-hero__title-main {
  display: block;
  font-size: clamp(48px, 10vw, 80px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.download-hero__subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin-bottom: 48px;
  line-height: 1.6;
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.2s both;
}

.text-highlight {
  color: var(--color-text);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════════════════════
   DOWNLOAD CARD
   ═══════════════════════════════════════════════════════════════════════════ */

.download-card {
  width: 100%;
  max-width: 520px;
  padding: 32px;
  margin-bottom: 48px;
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.3s both;
}

.download-card:hover {
  transform: translateY(-4px);
}

.download-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.download-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-text);
  border-radius: var(--radius-lg);
}

.download-card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-bg);
}

.download-card__info {
  flex: 1;
  text-align: left;
}

.download-card__title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.download-card__meta {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

/* ═══════════════════════════════════════════════════════════════════════════
   PLATFORM SELECTOR
   ═══════════════════════════════════════════════════════════════════════════ */

.platform-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.platform-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out-expo);
  cursor: pointer;
  position: relative;
}

.platform-btn svg {
  width: 24px;
  height: 24px;
}

.platform-btn:hover:not(:disabled) {
  border-color: var(--color-text);
  color: var(--color-text);
}

.platform-btn.active {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}

.platform-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.platform-soon {
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  background: var(--color-warning);
  color: white;
  border-radius: var(--radius-sm);
}

/* ═══════════════════════════════════════════════════════════════════════════
   AUTH GATE
   ═══════════════════════════════════════════════════════════════════════════ */

.download-card__auth {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.auth-required {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  text-align: left;
}

.auth-required svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-warning);
  flex-shrink: 0;
}

.auth-required__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.auth-required__text strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.auth-required__text span {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ═══════════════════════════════════════════════════════════════════════════
   DOWNLOAD READY
   ═══════════════════════════════════════════════════════════════════════════ */

.download-card__ready {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
}

.user-badge__avatar {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-success);
  color: white;
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-full);
}

.user-badge__info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.user-badge__name {
  font-size: 14px;
  font-weight: 700;
}

.user-badge__status {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--color-success);
}

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

/* ═══════════════════════════════════════════════════════════════════════════
   FEATURES GRID
   ═══════════════════════════════════════════════════════════════════════════ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 720px;
  animation: fadeInUp 0.6s var(--ease-out-expo) 0.4s both;
}

.feature-card {
  padding: 24px;
  text-align: center;
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-border);
  border-radius: var(--radius-md);
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text);
}

.feature-card__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.feature-card__desc {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  .download-page {
    padding-top: calc(var(--header-height) + 32px);
  }
  
  .download-hero__title-main {
    font-size: 48px;
  }
  
  .download-card {
    padding: 24px;
  }
  
  .platform-selector {
    flex-direction: column;
  }
  
  .platform-btn {
    flex-direction: row;
    padding: 12px 16px;
    gap: 12px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-card {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
  }
  
  .feature-card__icon {
    margin: 0;
    flex-shrink: 0;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   MC NICKNAME MODAL (Premium Redesign)
   ═══════════════════════════════════════════════════════════════════════════ */

.mc-nickname-card {
  width: 100%;
  max-width: 440px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.15);
  animation: modalSlideIn 0.4s var(--ease-out-expo);
}

body.dark-mode .mc-nickname-card {
  background: var(--color-surface-elevated);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.mc-nickname-card__header {
  text-align: center;
  margin-bottom: 24px;
}

.mc-nickname-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--color-accent), #6366f1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mc-nickname-card__icon svg {
  width: 32px;
  height: 32px;
  stroke: #fff;
}

.mc-nickname-card__title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.mc-nickname-card__subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.mc-nickname-card__info {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.mc-nickname-card__info svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent);
  flex-shrink: 0;
  margin-top: 1px;
}

.mc-nickname-card__info p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

.mc-nickname-card__form {
  margin-bottom: 24px;
}

.mc-nickname-card__label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.mc-nickname-card__input-wrapper {
  position: relative;
  margin-bottom: 16px;
}

.mc-nickname-card__input {
  width: 100%;
  padding: 14px 60px 14px 16px;
  font-size: 15px;
  font-family: var(--font-mono);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: all var(--duration-fast);
}

.mc-nickname-card__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.mc-nickname-card__input::placeholder {
  color: var(--color-text-muted);
}

.mc-nickname-card__counter {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

.mc-nickname-card__rules {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.mc-nickname-card__rule {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
  transition: color var(--duration-fast);
}

.mc-nickname-card__rule svg {
  width: 14px;
  height: 14px;
  stroke: var(--color-text-muted);
  transition: all var(--duration-fast);
}

.mc-nickname-card__rule.valid {
  color: var(--color-success);
}

.mc-nickname-card__rule.valid svg {
  stroke: var(--color-success);
}

.mc-nickname-card__rule.invalid {
  color: var(--color-danger);
}

.mc-nickname-card__rule.invalid svg {
  stroke: var(--color-danger);
}

.mc-nickname-card__status {
  font-size: 13px;
  margin: 0;
  min-height: 20px;
}

.mc-nickname-card__status.error {
  color: var(--color-danger);
}

.mc-nickname-card__submit {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 700;
  background: var(--color-text);
  color: var(--color-bg);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.mc-nickname-card__submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.mc-nickname-card__submit:active:not(:disabled) {
  transform: translateY(0);
}

.mc-nickname-card__submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.mc-nickname-card__submit svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}