/* =============================================
   DESIGN TOKENS
   ============================================= */

:root {
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --color-green: #2FAE7A;
  --color-green-hover: #28996c;
  --color-violet: #6D5DFC;
  --color-blue: #4F8EF7;
  --color-orange: #F0975A;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  --header-height: 72px;
  --content-max-width: 1080px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ----- DARK THEME (default) ----- */
[data-theme="dark"] {
  --bg-primary: #0B0D12;
  --bg-secondary: #0E1016;
  --surface: #15171F;
  --surface-hover: #1A1D26;
  --surface-border: rgba(255, 255, 255, 0.06);

  --text-primary: #F0F0F0;
  --text-secondary: rgba(240, 240, 240, 0.75);
  --text-tertiary: rgba(240, 240, 240, 0.6);
  --text-muted: rgba(240, 240, 240, 0.5);
  --text-faint: rgba(240, 240, 240, 0.4);

  --header-bg: rgba(11, 13, 18, 0.7);
  --header-bg-scrolled: rgba(11, 13, 18, 0.95);
  --toggle-hover: rgba(255, 255, 255, 0.06);

  --footer-border: rgba(255, 255, 255, 0.06);

  --btn-primary-bg: var(--color-green);
  --btn-primary-text: #ffffff;
  --btn-secondary-border: rgba(255, 255, 255, 0.15);
  --btn-secondary-text: var(--text-primary);
}

/* ----- LIGHT THEME ----- */
[data-theme="light"] {
  --bg-primary: #FAFAF8;
  --bg-secondary: #F7F7F5;
  --surface: #FFFFFF;
  --surface-hover: #F5F5F3;
  --surface-border: rgba(0, 0, 0, 0.08);

  --text-primary: #1A1A1A;
  --text-secondary: rgba(26, 26, 26, 0.75);
  --text-tertiary: rgba(26, 26, 26, 0.6);
  --text-muted: rgba(26, 26, 26, 0.5);
  --text-faint: rgba(26, 26, 26, 0.4);

  --header-bg: rgba(250, 250, 248, 0.7);
  --header-bg-scrolled: rgba(250, 250, 248, 0.95);
  --toggle-hover: rgba(0, 0, 0, 0.04);

  --footer-border: rgba(0, 0, 0, 0.08);

  --btn-primary-bg: var(--color-green);
  --btn-primary-text: #ffffff;
  --btn-secondary-border: rgba(0, 0, 0, 0.15);
  --btn-secondary-text: var(--text-primary);
}

/* =============================================
   RESET & BASE
   ============================================= */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

/* =============================================
   HEADER
   ============================================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--surface-border);
  transition: background var(--transition-base);
}

.header.scrolled {
  background: var(--header-bg-scrolled);
}

.header__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.header__logo-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(47, 174, 122, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(47, 174, 122, 0.18);
  overflow: hidden;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.header__logo:hover .header__logo-icon-wrap {
  background: rgba(47, 174, 122, 0.18);
  border-color: rgba(47, 174, 122, 0.3);
  transform: scale(1.05);
}

.header__logo-icon {
  width: 100%;
  height: 100%;
  padding: 4px;
  box-sizing: border-box;
  object-fit: contain;
}

.header__logo-text {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-base);
}

[data-theme="light"] .header__logo-icon-wrap {
  background: rgba(47, 174, 122, 0.1);
  border-color: rgba(47, 174, 122, 0.2);
}

.header__right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--space-sm);
  transition: background var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--toggle-hover);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

.theme-toggle:hover svg {
  transform: rotate(15deg);
}

[data-theme="dark"] .theme-toggle__sun { display: none; }
[data-theme="dark"] .theme-toggle__moon { display: block; }
[data-theme="light"] .theme-toggle__sun { display: block; }
[data-theme="light"] .theme-toggle__moon { display: none; }

.header__cta {
  padding: 10px 20px;
  border-radius: var(--radius-md);
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: filter var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}

.header__cta:hover {
  filter: brightness(0.92);
  transform: translateY(-1px);
}

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

/* =============================================
   FOOTER
   ============================================= */

.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--footer-border);
  transition: border-color var(--transition-base);
}

.footer__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.footer__brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  opacity: 0.9;
}

.footer__links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  font-size: 14px;
}

.footer__copy {
  color: var(--text-tertiary);
}

.footer__link {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.footer__link:hover {
  opacity: 1;
  color: var(--text-primary);
}

.footer__follow-wrap {
  position: relative;
}

.footer__follow-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-family: var(--font-family);
  font-size: 14px;
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-fast);
}

.footer__follow-btn:hover {
  color: var(--text-primary);
}

.footer__follow-btn svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.footer__follow-btn.open svg {
  transform: rotate(180deg);
}

.footer__popup {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 180px;
  padding: var(--space-sm);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: 100;
}

.footer__popup.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.footer__popup-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: background var(--transition-fast);
}

.footer__popup-link:hover {
  background: var(--toggle-hover);
}

.footer__popup-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* =============================================
   BETA MAIN CONTENT
   ============================================= */

.beta-main {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + 48px) 24px 48px;
}

.beta-speech-img {
  max-width: 800px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 8px 32px rgba(0, 0, 0, 0.35));
}

.beta-links {
  max-width: 650px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 40px;
}

.beta-link-box {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 20px 24px;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.beta-link-box__title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.beta-link-box__row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.beta-link-box__url {
  flex: 1;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 14px;
  color: var(--text-primary);
  word-break: break-all;
  line-height: 1.5;
}

.beta-link-box__copy-btn {
  flex-shrink: 0;
  padding: 8px 18px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: filter var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}

.beta-link-box__copy-btn:hover {
  filter: brightness(0.88);
  transform: translateY(-1px);
}

.beta-link-box__copy-btn:active {
  transform: translateY(0);
}

.beta-link-box__copy-btn--blue {
  background: var(--color-blue);
}

.beta-link-box__copy-btn--orange {
  background: var(--color-orange);
}

/* =============================================
   VALIDATION SECTION
   ============================================= */

.beta-validation {
  max-width: 650px;
  width: 100%;
  margin-top: 40px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  padding: 32px;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.beta-validation__heading {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.beta-validation__body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* Email form | matches index.html */
.cta__email-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 420px;
}

.cta__email-input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--btn-secondary-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 15px;
  outline: none;
  transition: border-color var(--transition-fast);
}

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

.cta__email-input:focus {
  border-color: var(--color-green);
}

.cta__email-btn {
  padding: 12px 20px;
  border: 1px solid var(--btn-secondary-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--btn-secondary-text);
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.cta__email-btn:hover {
  border-color: var(--color-green);
  color: var(--color-green);
}

.cta__email-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 12px;
}

.cta__email-success {
  font-size: 14px;
  color: var(--color-green);
  padding: 12px 0;
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 600px) {
  .cta__email-form {
    flex-direction: column;
  }
  .beta-link-box__row {
    flex-direction: column;
    align-items: stretch;
  }
  .beta-link-box__copy-btn {
    text-align: center;
  }
  .footer__links {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer__popup {
    left: 0;
    transform: translateX(0);
  }
  .footer__popup.open {
    transform: translateX(0) translateY(0);
  }
}