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

/* ==================================== */
/* 1. DEFAULT (DARK) THEME VARIABLES */
/* ==================================== */
:root {
  --color-accent: #00A85D;
  --color-accent-dark: #008f4c;
  --color-bg: #1C1E21;
  --color-surface: #272A2E;
  --color-text: #E0E3E8;
  --color-text-dim: #8F939A;
  --color-border: #373A3F;
  --color-hover: #323539;
  --color-red: #EB4458;
  --color-hect1k: #6b75e6;

  --font-sans: 'IBM Plex Mono', monospace, 'Helvetica Neue', Arial, sans-serif;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
}

/* ==================================== */
/* 2. BASE STYLES */
/* These styles use the variables defined above (defaulting to Dark) */
/* ==================================== */

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

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

header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
}

header div {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
}

.logo a {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  text-transform: lowercase;
}

.logo a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.auth-links {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  justify-content: center;
}

.auth-links a,
.auth-links button {
  font-weight: 500;
  color: var(--color-text-dim);
  text-underline-offset: 2px;
  text-transform: lowercase;
}

.auth-links a:hover,
.auth-links button:hover {
  color: var(--color-text);
  background-color: transparent !important;
  text-decoration: underline;
}

.auth-links button {
  padding: 0;
  border: none;
  font-size: 1rem;
  font-weight: 500;
}

.button {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--color-accent);
  background-color: transparent;
  color: var(--color-accent);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s ease-in-out;
}

.button:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.button.primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.button.primary:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-text);
}

.submit-btn {
  background-color: var(--color-accent-dark);
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 700;
  text-transform: lowercase;
}

.submit-btn:hover {
  background-color: var(--color-accent);
  color: var(--color-text);
}


.container {
  width: 100%;
  max-width: 750px;
  margin: var(--space-lg) auto;
  padding: 0 var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.welcome-text {
  align-self: flex-start;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.feature-tabs {
  display: flex;
  width: 100%;
}

.tab-button {
  flex-grow: 1;
  text-align: center;
  padding: var(--space-md);
  background: var(--color-bg);
  border: none;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-text-dim);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
  text-transform: lowercase;
}

.tab-button:hover {
  color: var(--color-text);
  background-color: var(--color-hover);
}

.tab-button.active {
  color: var(--color-accent);
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-accent);
  font-weight: 700;
}

.tab-content.hidden {
  display: none;
}

.tab-content {
  width: 100%;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-md);
}

.tab-content h2 {
  display: none;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.input-group label {
  font-weight: 700;
  font-size: 1.25rem;
  text-transform: lowercase;
}

.require-field {
  color: var(--color-red);
}

input[type="text"],
input[type="url"],
input[type="email"],
input[type="password"],
select,
textarea {
  padding: 5px;
  border: 1px solid var(--color-border);
  background-color: var(--color-hover);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  width: 100%;
  transition: border-color 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 1px var(--color-accent);
}

textarea {
  min-height: 100px;
  resize: vertical;
  font-family: monospace;
}

input[type="file"] {
  display: none;
}

.file-label {
  display: block;
  padding: 5px;
  text-align: center;
  background-color: var(--color-hover);
  border: 1px dashed var(--color-text-dim);
  cursor: pointer;
  font-size: 1rem !important;
  color: var(--color-text-dim);
  transition: background-color 0.2s;
  text-transform: lowercase;
}

.file-label:hover {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.custom-code-p {
  display: flex;
  align-items: center;
}

.custom-code-input {
  padding: 2px !important;
}

footer {
  text-align: center;
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-dim);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  justify-content: center;
}

footer ul {
  display: flex;
  gap: var(--space-md);
}

footer span {
  display: none;
}

footer a {
  font-size: 1rem;
  color: var(--color-text-dim);
  text-transform: lowercase;
}

footer a:hover {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

footer p {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-text-dim);
}

.hect1k {
  font-size: 0.75rem;
  color: var(--color-hect1k);
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (min-width: 600px) {
  header div {
    flex-direction: row;
  }

  footer {
    padding: var(--space-lg) var(--space-md);
    flex-direction: row;
    gap: var(--space-md);
  }

  footer span {
    display: inline-block;
  }

  footer p,
  .hect1k {
    font-size: 1rem;
  }
}

.success-box {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.result-url {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-style: italic;
}

#expiry-text {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.action-buttons,
.url-group {
  display: flex;
  gap: var(--space-sm);
}

.url-group {
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: space-between;
}

.copy-btn,
.share-btn {
  font-size: 1rem;
  color: var(--color-text-dim);
  transition: color 0.2s;
  display: grid;
  place-items: center;
  padding: 2px;
  border: none;
  background-color: transparent;
  cursor: pointer;
}

.go-back {
  font-size: 1rem;
  color: var(--color-accent);
  transition: color 0.2s;
  background-color: transparent;
}

.go-back:hover,
.copy-btn:hover,
.share-btn:hover {
  color: var(--color-text);
  background-color: transparent !important;
}

.go-back:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

h2 {
  text-transform: none;
}

#register-section,
#login-section,
#reset-section,
#about-content,
#terms-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

#register-section p a,
#login-section p a,
#reset-section p a {
  color: var(--color-text-dim);
  text-decoration: underline;
  text-underline-offset: 2px;
}

#register-section p a:hover,
#login-section p a:hover,
#reset-section p a:hover {
  color: var(--color-text);
}


#register-form,
#login-form,
#reset-form {
  gap: var(--space-md) !important;
}

#resend-btn {
  margin: 0 auto;
  width: fit-content;
  color: var(--color-text-dim);
  text-transform: lowercase;
  text-decoration: underline;
  text-underline-offset: 2px;
  padding: 0;
  font-size: 0.8rem;
  background-color: transparent;
  border: none;
  transition: color 0.2s;
}

#resend-btn:hover {
  color: var(--color-text);
}

#forgot-password {
  margin-left: auto;
  padding: 0;
  font-size: 0.8rem;
  background-color: transparent;
  border: none;
  color: var(--color-accent);
  transition: color 0.2s;
}

#forgot-password:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.password-with-forgot {
  display: flex;
  gap: var(--space-sm);
  justify-content: space-between;
  align-items: center;
}

#about-content ul,
#terms-content ul {
  list-style: disc;
  padding-left: 1.5rem;
}

#about-content i,
#terms-content i {
  font-style: normal;
  font-weight: 700;
}

#about-content b,
#terms-content b {
  font-weight: 700;
  color: var(--color-accent);
}

#about-content a,
#terms-content a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.fine-print {
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

/* ==================================== */
/* 3. LIGHT THEME OVERRIDE */
/* ==================================== */
@media (prefers-color-scheme: light) {
  :root {
    --color-accent: #008f4c;
    --color-accent-dark: #00A85D;
    --color-bg: #efefef;
    --color-surface: #F4F6F8;
    --color-text: #1C1E21;
    --color-text-dim: #606770;
    --color-border: #D8DAE0;
    --color-hover: #E4E6E9;
    --color-red: #D83C3C;
    --color-hect1k: #4252C4;
  }

  .button:hover {
    color: var(--color-text);
  }
}