@import url('https://fonts.googleapis.com/css2?family=Uncial+Antiqua&family=Cinzel:wght@400;600;700&display=swap');

/* ===== CSS RESET & BASE ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  /* Color Palette */
  --primary-bg: #1e1e2f;
  --secondary-bg: #2c2c3a;
  --dark-bg: #1a1a1a;
  --nav-bg: #010117;
  --accent-gold: #f39c12;
  --accent-gold-hover: #d67e0a;
  --accent-gold-light: rgba(243, 156, 18, 0.2);
  --text-light: #e8e0c9;
  --text-muted: #ccc;
  --text-overlay: #f0f0f0;
  --border-color: #555;
  --error-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f1c40f;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 2.5rem;
  
  /* Shadows */
  --shadow-subtle: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-strong: 2px 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 15px rgba(243, 156, 18, 0.3);
  
  /* Borders */
  --border-radius: 8px;
  --border-radius-lg: 12px;
  
  /* Typography */
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-fantasy: 'Cinzel', 'Uncial Antiqua', serif;
  --font-serif: 'Georgia', serif;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
}

body {
  background: var(--primary-bg);
  color: var(--text-light);
  font-family: var(--font-primary);
  margin: 0;
  padding: 60px 0 0 0;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--accent-gold);
  color: var(--primary-bg);
  padding: 8px;
  text-decoration: none;
  z-index: 10000;
  border-radius: var(--border-radius);
}

.skip-link:focus {
  top: 6px;
}

/* Focus Styles */
*:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

button:focus,
select:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.2;
  font-family: var(--font-fantasy);
}

h1 {
  font-size: clamp(2rem, 5vw, 2.5rem);
  color: var(--accent-gold);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--accent-gold);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
  font-weight: 600;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  color: #e0c068;
  font-style: italic;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

h4 {
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

p {
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  margin: 0 0 var(--spacing-lg) 0;
  color: var(--text-muted);
}

em {
  font-style: italic;
  color: var(--text-muted);
  opacity: 0.8;
}

strong {
  font-weight: 700;
  color: var(--text-light);
}

/* ===== NAVIGATION ===== */
#main-nav {
  background-color: var(--nav-bg);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: var(--shadow-medium);
  backdrop-filter: blur(10px);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-left .logo {
  font-weight: 700;
  color: var(--text-overlay);
  text-decoration: none;
  font-size: 1.2rem;
  font-family: var(--font-fantasy);
  transition: color var(--transition-medium);
}

.nav-left .logo:hover,
.nav-left .logo:focus {
  color: var(--accent-gold);
}

/* Hamburger Menu */
.dropdown {
  position: relative;
}

.dropbtn {
  background: none;
  border: none;
  color: var(--text-overlay);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: background-color var(--transition-medium);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 25px;
}

.dropbtn:hover,
.dropbtn:focus {
  background-color: rgba(255, 255, 255, 0.1);
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--text-overlay);
  border-radius: 2px;
  transition: all var(--transition-medium);
}

.dropbtn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.dropbtn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.dropbtn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  background-color: var(--secondary-bg);
  min-width: 180px;
  box-shadow: var(--shadow-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  z-index: 1001;
  border: 1px solid var(--border-color);
}

.dropdown-content a {
  color: var(--text-light);
  padding: var(--spacing-md) var(--spacing-lg);
  display: block;
  text-decoration: none;
  transition: background-color var(--transition-medium);
}

.dropdown-content a:hover,
.dropdown-content a:focus {
  background-color: var(--accent-gold);
  color: var(--primary-bg);
}

.dropdown:hover .dropdown-content,
.dropdown:focus-within .dropdown-content {
  display: block;
  animation: fadeInSlide var(--transition-medium) ease;
}

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

/* ===== HEADER ===== */
#site-header {
  width: 100%;
  position: relative;
  overflow: hidden;
}

#site-header img {
  width: 100%;
  height: auto;
  max-height: 300px;
  display: block;
  object-fit: cover;
  border-bottom: 3px solid var(--accent-gold);
  box-shadow: var(--shadow-strong);
}

.header-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.6));
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-text {
  text-align: center;
  color: var(--text-overlay);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.9);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--border-radius);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(243, 156, 18, 0.3);
}

/* ===== MAIN CONTENT ===== */
main {
  width: 100%;
  max-width: 1200px;
  padding: var(--spacing-lg);
}

/* ===== TOOL SECTIONS ===== */
.tool-section {
  background: linear-gradient(135deg, var(--secondary-bg) 0%, #2a2a40 100%);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-strong);
  max-width: 700px;
  margin: var(--spacing-xxl) auto;
  border: 1px solid var(--accent-gold-light);
  position: relative;
  overflow: hidden;
}

.tool-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-gold), #e67e22, var(--accent-gold));
}

.tool-section h2 {
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.tool-section p {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: 1.1rem;
}

/* ===== FORMS ===== */
.tool-form {
  margin-bottom: var(--spacing-xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-light);
  font-size: 1.1rem;
}

.form-help {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
}

select,
input[type="number"],
input[type="text"] {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--primary-bg);
  color: var(--text-light);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: all var(--transition-medium);
  font-family: var(--font-primary);
}

select:focus,
input[type="number"]:focus,
input[type="text"]:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-light);
  background-color: #252538;
}

select:invalid,
input:invalid {
  border-color: var(--error-color);
}

/* Radio Groups */
.radio-group {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-top: var(--spacing-sm);
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: 0;
  cursor: pointer;
  font-weight: normal;
}

.radio-group input[type="radio"] {
  width: auto;
  margin: 0;
}

fieldset {
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  background-color: rgba(0, 0, 0, 0.2);
}

legend {
  padding: 0 var(--spacing-md);
  font-weight: 600;
  color: var(--accent-gold);
}

/* ===== BUTTONS ===== */
.btn {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #e67e22 100%);
  color: var(--primary-bg);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-subtle);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  position: relative;
  overflow: hidden;
  font-family: var(--font-primary);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  background: linear-gradient(135deg, var(--accent-gold-hover) 0%, #d35400 100%);
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-subtle);
}

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

.btn--secondary {
  background: linear-gradient(135deg, var(--border-color) 0%, #666 100%);
  color: var(--text-light);
}

.btn--secondary:hover {
  background: linear-gradient(135deg, #666 0%, #777 100%);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}

/* ===== RESULTS DISPLAY ===== */
.result-display {
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-bg) 0%, #1a1a2a 100%);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
  color: var(--accent-gold);
  margin-top: var(--spacing-lg);
  text-align: center;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all var(--transition-medium);
  font-size: 1.1rem;
  line-height: 1.5;
}

.result-display:empty::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(85, 85, 85, 0.1) 10px,
    rgba(85, 85, 85, 0.1) 20px
  );
  border-radius: var(--border-radius);
}

.result-display.has-content {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-glow), inset 0 0 10px rgba(0, 0, 0, 0.5);
}

/* ===== LOADING INDICATORS ===== */
.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  color: var(--accent-gold);
  font-style: italic;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ===== COLLAPSIBLE CONTENT ===== */
.content-section {
  max-width: 900px;
  margin: var(--spacing-xxl) auto;
  padding: 0 var(--spacing-lg);
}

.collapsible-section {
  margin-bottom: var(--spacing-xl);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  background: var(--dark-bg);
}

.collapsible {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #e67e22 100%);
  color: var(--primary-bg);
  cursor: pointer;
  padding: var(--spacing-lg) var(--spacing-xl);
  width: 100%;
  border: none;
  text-align: left;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-fantasy);
  transition: all var(--transition-medium);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.collapsible::after {
  content: '+';
  font-size: 2rem;
  font-weight: 300;
  transition: transform var(--transition-medium);
  line-height: 1;
}

.collapsible[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.collapsible:hover,
.collapsible:focus {
  background: linear-gradient(135deg, var(--accent-gold-hover) 0%, #d35400 100%);
  color: var(--text-overlay);
  box-shadow: var(--shadow-glow);
}

.content {
  padding: 0 var(--spacing-xl);
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition-slow);
  background-color: var(--dark-bg);
  color: var(--text-muted);
}

.content.active {
  padding: var(--spacing-lg) var(--spacing-xl);
  max-height: 2000px;
}

.content p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.content h4 {
  color: var(--accent-gold);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

/* ===== DICE HISTORY ===== */
.dice-history {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.history-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
  max-height: 200px;
  overflow-y: auto;
}

.history-list li {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--primary-bg);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--border-radius);
  border-left: 3px solid var(--accent-gold);
  font-family: monospace;
}

/* ===== DECORATIVE ELEMENTS ===== */
#valkari-logo {
  width: min(90vw, 800px);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

#valkari-logo img {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 0 20px rgba(243, 156, 18, 0.3));
}

#side-decor-left,
#side-decor-right {
  position: absolute;
  top: 350px;
  bottom: 0;
  width: 280px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: var(--spacing-md);
  z-index: -1;
}

#side-decor-left {
  left: 20px;
}

#side-decor-right {
  right: 20px;
}

#side-decor-left img,
#side-decor-right img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-medium);
  transition: transform var(--transition-medium);
}

#side-decor-left img:hover,
#side-decor-right img:hover {
  transform: scale(1.05);
}

/* ===== NOTIFICATIONS ===== */
.toast-container {
  position: fixed;
  top: 80px;
  right: var(--spacing-lg);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  color: white;
  font-weight: 600;
  box-shadow: var(--shadow-medium);
  animation: slideInRight var(--transition-medium) ease;
  max-width: 300px;
  word-wrap: break-word;
}

.toast--success {
  background-color: var(--success-color);
}

.toast--error {
  background-color: var(--error-color);
}

.toast--warning {
  background-color: var(--warning-color);
  color: var(--primary-bg);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== UTILITIES ===== */
.back-home-button {
  position: fixed;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 100;
  background: var(--secondary-bg);
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-subtle);
}

.back-home-button:hover,
.back-home-button:focus {
  background: var(--accent-gold);
  color: var(--primary-bg);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* ===== FOOTER ===== */
footer {
  width: 100%;
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--nav-bg);
  color: var(--text-muted);
  margin-top: auto;
}

footer p {
  margin: 0;
  font-size: 0.9rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
  #side-decor-left,
  #side-decor-right {
    width: 200px;
  }
  
  #side-decor-left {
    left: 10px;
  }
  
  #side-decor-right {
    right: 10px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-xxl: 2rem;
  }

  body {
    padding-top: 60px;
  }

  .nav-container {
    padding: var(--spacing-md);
  }

  #site-header img {
    max-height: 200px;
  }

  .header-text {
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .tool-section {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
  }

  .btn-group {
    flex-direction: column;
  }

  .radio-group {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  #side-decor-left,
  #side-decor-right {
    display: none;
  }

  .back-home-button {
    position: static;
    margin: var(--spacing-lg) auto 0;
    display: block;
    width: fit-content;
  }

  .toast-container {
    right: var(--spacing-sm);
    left: var(--spacing-sm);
  }

  .toast {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .content-section {
    padding: 0 var(--spacing-sm);
  }

  .collapsible {
    font-size: 1.25rem;
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .tool-section {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  #main-nav,
  .back-home-button,
  .btn,
  #side-decor-left,
  #side-decor-right {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
    padding: 0 !important;
  }

  .tool-section {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
  }
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
  :root {
    --primary-bg: #000;
    --secondary-bg: #1a1a1a;
    --text-light: #fff;
    --border-color: #fff;
  }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}