:root {
  
  --main-clock-width: clamp(300px, 22vw, 550px);
  --main-clock-height: clamp(112px, 9.75vw, 262px);
  --clock-size: clamp(150px, 13vw, 350px);
  
  --gap-small: clamp(6px, 0.6vw, 15px);
  --gap-medium: clamp(12px, 1.2vw, 30px);
  --gap-large: clamp(16px, 1.6vw, 40px);
  
  --bg: #FAFAFA;
  --surface: rgba(255,255,255,0.75);
  --surface-hover: rgba(240,245,250,0.95);
  --surface-solid: #ffffff;
  --border: rgba(0,0,0,0.1);
  --text: #2D3748;
  --muted: #4A5568;
  --accent: #3182CE;
  --accent-strong: #1E64A8;
  
  --shadow: 0 10px 25px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
  --radius: 12px;
  --transition: 220ms ease;
  --card-blur: 10px;
  
  --gradient-1: #f7fafc;
  --gradient-2: #edf2f7;
  --glass-stroke: rgba(255,255,255,0.6);
  
  --font-stack: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  
  --text-xs: clamp(10px, 0.8vw, 12px);
  --text-sm: clamp(11px, 0.9vw, 14px);
  --text-base: clamp(12px, 1vw, 16px);
  --text-lg: clamp(14px, 1.2vw, 18px);
  --text-xl: clamp(16px, 1.4vw, 20px);
  --text-2xl: clamp(18px, 1.6vw, 24px);
  --text-3xl: clamp(22px, calc(13vw * 0.15), 28px);
  --text-4xl: clamp(22px, 3.6vw, 34px);
  
  --floating-border-scale: 1;
}

/* ===== DARK THEME OVERRIDES ===== */
[data-theme="dark"] {
  --bg: #0F0F0F;
  --surface: rgba(45,55,72,0.55);
  --surface-hover: rgba(45,55,72,0.65);
  --surface-solid: #2D3748;
  --border: rgba(255,255,255,0.15);
  --text: #F7FAFC;
  --muted: #CBD5E0;
  --accent: #63B3ED;
  --accent-strong: #3AA0E9;
  --shadow: 0 10px 30px rgba(0,0,0,0.65), 0 2px 8px rgba(0,0,0,0.4);
  --gradient-1: #0f1216;
  --gradient-2: #1a202c;
  --glass-stroke: rgba(255,255,255,0.24);
}

/* ===== BASE STYLES ===== */
* { box-sizing: border-box; }

html, body { 
  height: 100%; 
}

body {
  margin: 0;
  font-family: var(--font-stack);
  color: var(--text);
  background: linear-gradient(180deg, var(--gradient-1), var(--gradient-2));
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: scroll;

}

.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

/* ===== LAYOUT CONTAINER ===== */
.container {
  max-width: 90vw;
  margin: 0 auto;
  padding: calc(var(--gap-medium) * 0.3) 1.2vw var(--gap-medium) 1.2vw;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

@media (max-width: 1024px) {
  .container {
    max-width: 98vw !important; 
    padding: calc(var(--gap-medium) * 0.3) 2px var(--gap-medium) 2px !important;
  }
}

@media (max-width: 768px) {
  .container {
    padding: calc(var(--gap-medium) * 0.3) 5px var(--gap-medium) 5px !important;
  }
}

@media (max-width: 480px) {
  .container {
    padding: calc(var(--gap-medium) * 0.3) 3px var(--gap-medium) 3px !important;
  }
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: calc(var(--gap-medium) * 0.6);
  padding-bottom: calc(var(--gap-medium) * 3);
}

[data-view="grid"] .main-content {
  flex: 0 1 auto;
  padding-bottom: 1vw;
}

/* ===== HEADER ===== */
.app-header {
  z-index: 100;
  backdrop-filter: saturate(1.2) blur(10px);
  background: transparent;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4vw 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

@media (max-width: 768px) {
  .header-left {
    gap: 0.75rem;
  }
  
  .view-toggle-button {
    width: 240px;
    height: 36px;
    border-radius: 18px;
    padding: 3px 4px;
  }
  
  .view-option {
    border-radius: 15px;
  }
  
  .view-text {
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .header-left {
    gap: 0.5rem;
  }
  
  .view-toggle-button {
    width: 200px;
    height: 32px;
    border-radius: 16px;
    padding: 2px 3px;
  }
  
  .view-option {
    border-radius: 14px;
  }
  
  .view-text {
    font-size: 11px;
  }
  
  .view-icon {
    width: 14px;
    height: 14px;
  }
}

.app-title {
  font-size: var(--text-2xl);
  letter-spacing: 0.3px;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.app-title .first-letter {
  margin-right: -4px;
}

.tiny-clock {
  width: 1.05em;
  height: 1.05em;
  vertical-align: middle;
  margin: 0 0.3px;
}

/* ===== VIEW TOGGLE ===== */
.view-toggle-button {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 4px 6px;
  width: 280px;
  height: 40px;
  display: flex;
  align-items: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.view-toggle-button:hover { 
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.view-toggle-button:active {
  transform: translateY(1px);
}

.view-option {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
  height: 100%;
  border-radius: 16px;
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

.view-option.active {
  background: var(--accent);
  color: white;
  transform: scale(1.05);
}

.view-option:not(.active) {
  color: var(--muted);
}

.view-toggle-button:hover .tiles-option:not(.active),
.view-toggle-button:hover .grid-option:not(.active) {
  color: var(--text);
}

.view-icon {
  width: 16px;
  height: 16px;
  transition: all var(--transition);
}

.view-text {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: none;
  transition: all var(--transition);
}

.view-icon.red-clock {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

[data-view="tiles"] .tiles-option { 
  background: var(--accent);
  color: white !important;
  transform: scale(1.05);
}

[data-view="tiles"] .grid-option { 
  background: transparent;
  color: var(--muted) !important;
}

[data-view="grid"] .tiles-option { 
  background: transparent;
  color: var(--muted) !important;
}

[data-view="grid"] .grid-option { 
  background: var(--accent);
  color: white !important;
  transform: scale(1.05);
}

/* ===== THEME TOGGLE ===== */
.icon-button {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 24px;
  padding: 4px;
  width: 48px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.icon-button:hover { 
  border-color: var(--accent);
  background: var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .icon-button:hover {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.icon-button:active {
  transform: translateY(1px);
}

[data-theme="dark"] .icon-button {
  justify-content: flex-end;
  background: var(--surface);
}

/* ===== LIGHT THEME VIEW TOGGLE FIXES ===== */
[data-theme="light"] .view-toggle-button .view-option:not(.active) {
  color: #6B7280; 
}

[data-theme="light"] .view-toggle-button:hover .view-option:not(.active) {
  color: #111827; 
}

[data-theme="light"] [data-view="tiles"] .tiles-option,
[data-theme="light"] [data-view="grid"] .grid-option {
  color: white !important;
}

[data-theme="light"] [data-view="tiles"] .grid-option,
[data-theme="light"] [data-view="grid"] .tiles-option {
  color: #6B7280 !important;
}

.icon-button .icon {
  width: 16px;
  height: 16px;
  transition: all var(--transition);
  position: absolute;
  left: 4px;
  opacity: 1;
}

[data-theme="dark"] .icon-button .icon {
  left: auto;
  right: 4px;
}

.icon-button .sun {
  color: #f59e0b;
}

.icon-button .moon {
  color: #8b5cf6;
}

.hour-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  gap: 0.5rem;
}

.hour-format-24,
.hour-format-12 {
  display: inline;
  transition: all 0.2s ease;
  cursor: pointer;
  color: var(--text);
  opacity: 0.6;
}

.hour-format-24.active,
.hour-format-12.active {
  opacity: 1;
  color: white;
  cursor: default;
  pointer-events: none;
  background: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
}

.hour-format-24:hover:not(.active),
.hour-format-12:hover:not(.active) {
  color: var(--accent);
  opacity: 1;
}

.icon {
  width: 18px; 
  height: 18px; 
  display: block; 
  fill: var(--text); 
  opacity: 0.9;
}

.icon.moon { display: none; }
[data-theme="dark"] .icon.sun { display: none; }
[data-theme="dark"] .icon.moon { display: block; }

/* ===== CARD BASE STYLES ===== */
.card {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(var(--card-blur)) saturate(1.2);
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition), border-color var(--transition);
}

/* ===== CLOCK CARDS ===== */
.clock-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: var(--clock-size);
  height: var(--clock-size);
  padding: 1vw;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.main-clock.clock-card {
  width: var(--main-clock-width);
  height: var(--main-clock-height);
}

/* ===== TIME-BASED THEMING ===== */

[data-theme="light"] .clock-card[data-time-theme="light"] {
  background: #ffffff;
  border: 1px solid rgba(0,0,0,0.1);
  color: #2D3748;
}

[data-theme="light"] .clock-card[data-time-theme="dark"] {
  background: #2D3748;
  border: 1px solid rgba(0,0,0,0.35);
  color: #F7FAFC;
  box-shadow: 0 10px 25px rgba(0,0,0,0.25), 0 2px 8px rgba(0,0,0,0.15);
}

[data-theme="dark"] .clock-card[data-time-theme="light"] {
  background: #E2E8F0;
  border: 1px solid rgba(255,255,255,0.25);
  color: #1A202C;
}

[data-theme="dark"] .clock-card[data-time-theme="dark"] {
  background: #2D3748;
  border: 1px solid rgba(255,255,255,0.15);
  color: #F7FAFC;
}

[data-theme="light"] .clock-card[data-time-theme="evening"] {
  background: linear-gradient(180deg, rgba(255, 248, 220, 0.15) 0%, rgba(255, 248, 220, 0.05) 30%, transparent 60%);
  background-color: #2D3748;
  border: 1px solid rgba(0,0,0,0.35);
  color: #F7FAFC;
  box-shadow: 0 10px 25px rgba(0,0,0,0.25), 0 2px 8px rgba(0,0,0,0.15);
}

[data-theme="dark"] .clock-card[data-time-theme="evening"] {
  background: linear-gradient(180deg, rgba(255, 248, 220, 0.12) 0%, rgba(255, 248, 220, 0.04) 30%, transparent 60%);
  background-color: #2D3748;
  border: 1px solid rgba(255,255,255,0.15);
  color: #F7FAFC;
}

[data-theme="light"] .clock-card[data-time-theme="light"] .clock-offset,
[data-theme="light"] .clock-card[data-time-theme="light"] .clock-period,
[data-theme="light"] .clock-card[data-time-theme="light"] .clock-date { 
  color: #4A5568; 
}

[data-theme="light"] .clock-card[data-time-theme="dark"] .clock-offset,
[data-theme="light"] .clock-card[data-time-theme="dark"] .clock-period,
[data-theme="light"] .clock-card[data-time-theme="dark"] .clock-date { 
  color: #CBD5E0; 
}

[data-theme="dark"] .clock-card[data-time-theme="light"] .clock-offset,
[data-theme="dark"] .clock-card[data-time-theme="light"] .clock-period,
[data-theme="dark"] .clock-card[data-time-theme="light"] .clock-date { 
  color: #4A5568; 
}

[data-theme="dark"] .clock-card[data-time-theme="dark"] .clock-offset,
[data-theme="dark"] .clock-card[data-time-theme="dark"] .clock-period,
[data-theme="dark"] .clock-card[data-time-theme="dark"] .clock-date { 
  color: #CBD5E0; 
}

[data-theme="light"] .clock-card[data-time-theme="evening"] .clock-offset,
[data-theme="light"] .clock-card[data-time-theme="evening"] .clock-period,
[data-theme="light"] .clock-card[data-time-theme="evening"] .clock-date { 
  color: #CBD5E0; 
}

[data-theme="dark"] .clock-card[data-time-theme="evening"] .clock-offset,
[data-theme="dark"] .clock-card[data-time-theme="evening"] .clock-period,
[data-theme="dark"] .clock-card[data-time-theme="evening"] .clock-date { 
  color: #CBD5E0; 
}

.clock-card .clock-offset,
.clock-card .clock-period,
.clock-card .clock-date {
  color: var(--muted);
}

/* ===== MAIN CLOCK ===== */
.main-clock {
  margin-left: auto;
  margin-right: auto;
  margin-top: calc(var(--gap-medium) * -0.2);
  max-width: var(--main-clock-width);
  background: none !important;
  border: none !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-bottom: 20px;
}

.main-clock .main-clock-top {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6vw;
  margin-bottom: 1vw;
}

.main-clock .main-clock-title { 
  display: flex;
  justify-content: center;
  margin-bottom: 0.375vw;
  position: relative;
  z-index: 150;
}

.main-clock .main-clock-title .select-toggle {
  background: transparent;
  border: none;
  color: var(--text);
  font-size: var(--text-xl);
  font-weight: 600;
  padding: 8px 12px;
  cursor: pointer;
  transition: background var(--transition);
  min-width: 380px;
  text-align: center;
  position: relative;
  z-index: 0;
}

.main-clock .main-clock-title .select-toggle .select-current {
  text-align: center;
  flex: 1;
}

.main-clock .main-clock-title .select:hover .select-toggle,
.main-clock .main-clock-title .select:focus-within .select-toggle,
.main-clock .main-clock-title .select.open .select-toggle {
  background: var(--surface);
  border-radius: 8px;
  box-shadow: var(--shadow);
  z-index: 200;
}

.main-clock-time-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin: 0;
  position: relative;
}

.main-clock-time {
  font-family: "SF Mono", "Monaco", "Inconsolata", "Roboto Mono", "Source Code Pro", monospace;
  font-variant-numeric: tabular-numeric;
  font-size: var(--text-4xl);
  font-weight: 700;
  margin: 0;
  color: var(--text);
  flex-shrink: 0;
}

.clock-period {
  font-size: calc(var(--text-sm) * 0.5);
  margin-top: 0.1vw;
  margin-bottom: 0.25vw;
  color: var(--muted);
  text-align: center;
}

.main-clock .clock-period {
  font-size: var(--text-lg);
  margin-top: 0.5vw;
  margin-bottom: 0.5vw;
  color: var(--text);
  text-align: center;
  font-weight: 500;
}

.gmt-offset {
  font-size: var(--text-xs);
  margin-top: 2px;
  opacity: 0.8;
  color: var(--muted);
}

/* ===== TIME PREVIEW CONTROLS ===== */
.preview-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 6px;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.preview-btn:hover {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}

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

[data-view="grid"] .preview-btn {
  visibility: hidden;
  pointer-events: none;
}

.preview-left, .preview-right {
  min-width: 60px;
  justify-content: center;
}

.preview-icon {
  font-size: 14px;
  font-weight: bold;
}

.preview-label {
  font-size: 11px;
  opacity: 0.8;
}

.preview-reset-container {
  position: absolute;
  top: calc(100% - 18px);
  left: 50%;
  transform: translateX(-50%);
}

.preview-reset {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 500;
  font-size: var(--text-xs);
  padding: 6px 16px;
  border-radius: 6px;
  transition: all var(--transition);
  width: 238px;
  white-space: nowrap;
}

.preview-reset:hover {
  background: var(--muted);
  color: var(--surface-solid);
  border-color: var(--text);
}

.preview-offset {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  box-shadow: var(--shadow);
}

/* ===== DROPDOWNS ===== */
.select { 
  min-width: 260px; 
  position: relative; 
}

.select.narrow { 
  min-width: 240px; 
  position: relative; 
}

.select-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-radius: 10px;
  padding: 10px 12px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: box-shadow var(--transition), background var(--transition), border-color var(--transition);
  font-size: var(--text-base);
  font-weight: 600;
}

.select-toggle:hover {
  background: var(--surface);
  box-shadow: var(--shadow);
}

.select-caret { 
  opacity: 0.7; 
}

.select-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  max-height: 320px;
  overflow: hidden;
  display: none;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
  z-index: 9999;
}

#addClockSelect .select-menu {
  top: auto;
  bottom: calc(100% + 8px);
}

.select-toggle[data-purpose="add-clock"] {
  justify-content: center;
}

.select-toggle[data-purpose="add-clock"] .select-current {
  text-align: center;
  flex: 1;
}

.select.open { 
  z-index: 10000; 
}

.select.open .select-menu { 
  display: block; 
}

.select:not(.open):hover,
.select:not(.open):focus-within {
  z-index: 500;
}

.select-search {
  width: 100%;
  border: none;
  padding: 10px 12px;
  outline: none;
  font-size: var(--text-lg);
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--text);
}

.select-list {
  list-style: none;
  margin: 0;
  padding: 6px;
  max-height: 270px;
  overflow: auto;
}

.select-option {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  width: 100%;
  border: none;
  background: transparent;
  text-align: left;
  padding: 10px 10px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text);
  transition: background var(--transition);
  font-size: var(--text-base);
}

.select-option .small { 
  font-size: var(--text-sm); 
  color: var(--muted); 
}

.select-option:hover { 
  background: rgba(99,179,237,0.15); 
}

/* ===== CLOCKS SECTION ===== */
.clocks-section {
  margin-top: calc(var(--gap-medium) * -0.5);
  padding: 0.6vw 0;
  padding-bottom: calc(var(--gap-medium) * 1.5);
  min-height: 0;
}

.clocks-section .clocks-header {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--gap-medium);
  margin-bottom: 0;
}

.clocks-grid {
  display: flex;
  justify-content: center;
}

.clock-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-small);
  align-items: stretch;
  justify-content: center;
  max-width: 100%;
}

/* ===== CLOCK CARD INTERNALS ===== */
.clock-card .clock-head {
  position: absolute;
  top: 0.5vw;
  left: 0.6vw;
  right: 0.6vw;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5vw;
}

.clock-card .clock-head .delete-btn { 
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.clock-city { 
  font-size: var(--text-lg);
  font-weight: 600;
  text-align: center;
}

.clock-offset { 
  color: var(--muted); 
  font-size: var(--text-sm);
  margin-top: 2px;
}

.clock-date {
  color: var(--muted);
  font-size: calc(var(--text-sm) * 0.94);
  text-align: center;
  position: absolute;
  bottom: 8px;
  left: 0;
  right: 0;
}

.clock-time-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0.5vw 0 0.25vw 0;
  height: 1.6vw;
  min-height: 20px;
}

.clock-time-icon svg {
  width: 1.4vw;
  height: 1.4vw;
  min-width: 18px;
  min-height: 18px;
  color: var(--muted);
  opacity: 0.9;
}

.clock-time-icon .morning { color: #f59e0b; }
.clock-time-icon .noon { color: #fbbf24; }
.clock-time-icon .evening { color: #f97316; }
.clock-time-icon .night { color: #8b5cf6; }

@media (max-width: 768px) {
  .clock-time-icon {
    height: 24px;
  }
  
  .clock-time-icon svg {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 480px) {
  .clock-time-icon {
    height: 28px;
  }
  
  .clock-time-icon svg {
    width: 24px;
    height: 24px;
  }
}

.clock-time {
  font-family: "SF Mono", "Monaco", "Inconsolata", "Roboto Mono", "Source Code Pro", monospace;
  font-variant-numeric: tabular-numeric;
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.1;
}

.clock-card .delete-btn { 
  display: none; 
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 10;
  border-radius: 50%;
  padding: 0;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 400;
  box-shadow: var(--shadow);
  transition: background var(--transition), color var(--transition);
  line-height: 1;
}

.clock-card:hover .delete-btn { 
  display: inline-flex; 
}

/* ===== DELETE BUTTON STYLES ===== */

.clock-card[data-time-theme="light"] .delete-btn {
  background: #ffffff;
  color: #4A5568;
  border: 1px solid rgba(0,0,0,0.1);
}

.clock-card[data-time-theme="light"] .delete-btn:hover {
  background: #4A5568;
  color: #ffffff;
  border-color: #2D3748;
}

.clock-card[data-time-theme="dark"] .delete-btn,
.clock-card[data-time-theme="evening"] .delete-btn {
  background: #2D3748;
  color: #CBD5E0;
  border: 1px solid rgba(0,0,0,0.35);
}

.clock-card[data-time-theme="dark"] .delete-btn:hover,
.clock-card[data-time-theme="evening"] .delete-btn:hover {
  background: #ffffff;
  color: #4A5568;
  border-color: rgba(0,0,0,0.1);
}

/* ===== TIME CONVERSION ===== */
.time-converter {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin-bottom: var(--gap-medium);
  padding: 0.6vw 0;
  position: relative;
}

.converter-label {
  font-weight: 600;
  color: var(--text);
  font-size: calc(var(--text-base) * 1.25);
  display: flex;
  align-items: center;
  height: 24px;
}

.converter-input {
  width: 150px;
  min-width: 150px;
  max-width: 150px;
  flex: 0 0 150px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: calc(var(--text-base) * 1.25);
  padding: 4px 0;
  border-bottom: 2px solid var(--border);
  outline: none;
  display: flex;
  align-items: center;
  height: 24px;
}

.converter-input:focus {
  border-bottom-color: var(--accent);
}

.converter-result {
  flex: 1 1 auto;
  font-size: calc(var(--text-base) * 1.25);
  color: var(--muted);
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  min-height: 24px;
  display: flex;
  align-items: center;
  height: 24px;
  line-height: 1.4;
}

.converter-output {
  display: inline-flex;
  align-items: baseline;
}

.converter-output > span {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.converter-error {
  position: absolute;
  top: 100%;
  left: 0;
  font-size: calc(var(--text-base) * 0.781);
  color: var(--danger);
  min-height: 16px;
  display: flex;
  align-items: center;
  height: 16px;
  margin-top: 2px;
}

.converter-result .highlight {
  color: var(--accent);
  font-weight: bold;
}

/* ===== FOOTER ===== */
.app-footer {
  padding: 1vw 0;
  padding-left: 0;
  padding-right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--gap-medium);
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  background: transparent;
  backdrop-filter: saturate(1.2) blur(10px);
}

.footer-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.github-link {
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition);
  font-size: var(--text-xs);
  opacity: 0.8;
}

.github-link:hover {
  color: var(--accent);
  opacity: 1;
}

.reset-button {
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.3vw 0.6vw;
  font-size: var(--text-xs);
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
}

.reset-button:hover {
  background: #ef4444;
  color: white;
  border-color: #dc2626;
}

.reset-button:active {
  transform: translateY(0);
}

.sync-checkbox {
  vertical-align: middle;
  margin-right: 0.5rem;
}

.time-sync-status {
  font-size: var(--text-xs);
  color: var(--muted);
  opacity: 0.8;
  cursor: pointer;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 900px) {
  .main-clock .main-clock-top { 
    grid-template-columns: 1fr; 
    text-align: left; 
  }
  
  .select { 
    min-width: 100%; 
  }
}

@media (max-width: 700px) {
  .clocks-grid { 
    flex-direction: column;
    align-items: center;
  }
  
  .align-right { 
    text-align: left; 
  }
  
  .main-clock-time-container {
    gap: 15px;
  }
  
  .preview-btn {
    padding: 6px 10px;
    min-width: 50px;
  }
  
  .preview-icon {
    font-size: 12px;
  }
  
  .preview-label {
    font-size: 10px;
  }
}

@media (max-width: 500px) {
  .main-clock-time-container {
    gap: 10px;
  }
  
  .preview-btn {
    padding: 5px 8px;
    min-width: 45px;
  }
  
  .preview-icon {
    font-size: 11px;
  }
  
  .preview-label {
    font-size: 9px;
  }
}

/* ===== GRID VIEW ===== */
.grid-container {
  margin-top: calc(var(--gap-medium) * -0.5);
  padding: 0.4vw 0;
  padding-bottom: calc(var(--gap-medium) * 1.5);
  min-height: 0;
}

.grid-container #gridAddClockSection {
  margin-top: var(--gap-medium);
  margin-bottom: 0;
}

.grid-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  max-width: fit-content;
  margin: 0 auto;
  min-height: 0;
  flex: 1;
}

.grid-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 32px;
  border: 2px solid var(--text);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.1);
  opacity: 0.7;
  z-index: 50;
  pointer-events: none;
  transition: left 200ms ease;
  left: var(--current-hour-position, 300px);
  transform: translateX(-50%) scale(var(--floating-border-scale, 1));
}

@media (max-width: 1200px) {
  .grid-wrapper::before {
    width: 30px;
  }
}

@media (max-width: 1024px) {
  .grid-wrapper::before {
    width: 28px;
  }
}

@media (max-width: 768px) {
  .grid-wrapper::before {
    width: 24px;
  }
}

@media (max-width: 640px) {
  .grid-wrapper::before {
    width: 20px;
  }
}

@media (max-width: 480px) {
  .grid-wrapper::before {
    width: 18px;
  }
}

[data-theme="dark"] .grid-wrapper::before {
  border-color: var(--text);
  background: rgba(255, 255, 255, 0.1);
}

.grid-city-row {
  display: grid;
  grid-template-columns: 120px 100px minmax(600px, 1fr) auto;
  align-items: center;
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--gap-small);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  border: 1px solid var(--border);
  gap: 16px;
  position: relative;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.grid-city-row:not(.default-city):hover {
  background: var(--surface-hover);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-color: var(--accent);
}

@media (min-width: 1400px) {
  .grid-city-row {
    grid-template-columns: 130px 110px minmax(700px, 1fr) auto;
    gap: 16px;
    padding: var(--gap-small);
  }
}

@media (min-width: 1800px) {
  .grid-city-row {
    grid-template-columns: 140px 140px minmax(800px, 1fr) auto;
    gap: 18px;
    padding: calc(var(--gap-small) * 1.2);
  }
}

@media (min-width: 2000px) {
  .grid-city-row {
    grid-template-columns: 130px 110px minmax(700px, 1fr) auto;
    gap: 16px;
    padding: var(--gap-small);
  }
  
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(30px, 1fr));
    gap: 2px;
    padding: 2px;
  }
  
  .grid-hour-cell {
    height: 34px;
    font-size: 11px;
  }
}

@media (max-width: 1200px) {
  .grid-city-row {
    grid-template-columns: 110px 90px minmax(480px, 1fr) auto;
    gap: 14px;
  }
}

@media (max-width: 1024px) {
  .grid-city-row {
    grid-template-columns: 100px 80px minmax(420px, 1fr) auto;
    gap: 12px;
  }
}

  @media (max-width: 1024px) {
    .grid-city-row {
      grid-template-columns: 80px 70px minmax(380px, 1fr) auto !important;
      gap: 10px;
      padding: var(--gap-small);
    }
  }

@media (max-width: 768px) {
  .grid-city-row {
    grid-template-columns: 80px 70px minmax(380px, 1fr) auto !important;
    gap: 10px;
    padding: var(--gap-small);
  }
  
  .grid-time-offset,
  .grid-time-date {
    font-size: 10px;
  }
}

@media (max-width: 640px) {
  .grid-city-row {
    grid-template-columns: 65px 60px minmax(320px, 1fr) auto !important;
    gap: 6px;
    padding: 6px;
  }
  
  .grid-city-name {
    font-size: var(--text-sm);
  }
  
  .grid-time-main {
    font-size: var(--text-base);
  }
}

@media (max-width: 480px) {
  .grid-city-row {
    grid-template-columns: 55px 50px minmax(280px, 1fr) auto !important;
    gap: 4px;
    padding: 4px;
  }
  
  .grid-city-name {
    font-size: var(--text-xs);
  }
  
  .grid-time-main {
    font-size: var(--text-sm);
  }
}

@media (max-width: 800px) {
  
  .container {
    max-width: 100vw !important;
    padding: 2px !important;
    overflow-x: auto; 
  }
  
  .main-content {
    overflow: visible;
  }
  
  .grid-timeline {
    overflow-x: hidden !important;
  }
  
  .grid-city-row {
    min-width: 800px !important;
  }
  
  .grid-wrapper {
    min-width: 800px !important;
  }
  
  .grid-time-icon {
    display: none !important;
  }
}

.grid-home-icon {
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  opacity: 0.7;
}

.grid-home-icon svg {
  width: 14px;
  height: 14px;
  color: var(--text-secondary);
}

.grid-city-row.dragging {
  opacity: 0.5;
  transform: rotate(1deg);
  z-index: 1000;
  cursor: grabbing;
}

.grid-city-row.drag-over {
  border-top: 3px solid var(--accent);
  background: rgba(59, 130, 246, 0.05);
}

.grid-city-row:not(.default-city) {
  cursor: grab;
}

.grid-city-row:not(.default-city):active {
  cursor: grabbing;
}

.grid-delete-btn {
  display: none;
  position: absolute;
  right: 8px;
  top: 8px;
  border-radius: 50%;
  padding: 0;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 400;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  cursor: pointer;
  z-index: 10;
}

.grid-city-row:hover .grid-delete-btn {
  display: inline-flex;
}

[data-theme="light"] .grid-delete-btn {
  background: #ffffff;
  color: #4A5568;
  border: 1px solid rgba(0,0,0,0.1);
}

[data-theme="light"] .grid-delete-btn:hover {
  background: #4A5568;
  color: #ffffff;
  border-color: #2D3748;
}

[data-theme="dark"] .grid-delete-btn {
  background: #2D3748;
  color: #CBD5E0;
  border: 1px solid rgba(0,0,0,0.35);
}

[data-theme="dark"] .grid-delete-btn:hover {
  background: #ffffff;
  color: #4A5568;
  border-color: rgba(0,0,0,0.1);
}

.grid-city-info {
  display: flex;
  align-items: center;
  min-width: 150px;
  flex-shrink: 0;
}

.grid-city-details {
  display: flex;
  flex-direction: column;
}

.grid-city-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}

.grid-city-abbr {
  font-size: var(--text-xs);
  color: var(--muted);
  margin-top: 2px;
}

.grid-time-info {
  display: flex;
  flex-direction: column;
  min-width: 120px;
  flex-shrink: 0;
  gap: 2px;
}

.grid-time-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.grid-current-time {
  font-family: "SF Mono", "Monaco", "Inconsolata", "Roboto Mono", "Source Code Pro", monospace;
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  white-space: nowrap;
}

.grid-time-offset {
  font-size: var(--text-xs);
  color: var(--muted);
  line-height: 1.2;
}

.grid-time-date {
  font-size: var(--text-xs);
  color: var(--muted);
  line-height: 1.2;
}

.grid-timeline {
  display: grid;
  grid-template-columns: repeat(24, minmax(28px, 1fr));
  gap: 2px;
  overflow-x: auto;
  padding: 2px;
  -webkit-overflow-scrolling: touch;
  border-radius: 6px;
  background: var(--bg);
  position: relative;
  min-width: 0;
  width: 100%;
}

@media (min-width: 1400px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(32px, 1fr));
    gap: 2px;
    padding: 2px;
  }
}

@media (min-width: 1800px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(30px, 1fr));
    gap: 2px;
    padding: 2px;
  }
}

@media (max-width: 1200px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(26px, 1fr));
    gap: 1px;
  }
}

@media (max-width: 1024px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(24px, 1fr));
    gap: 1px;
  }
}

@media (max-width: 768px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(22px, 1fr));
    gap: 1px;
    padding: 1px;
  }
}

@media (max-width: 640px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(20px, 1fr));
    gap: 1px;
    padding: 1px;
  }
}

@media (max-width: 480px) {
  .grid-timeline {
    grid-template-columns: repeat(24, minmax(18px, 1fr));
    gap: 1px;
    padding: 1px;
    overflow-x: hidden; 
  }
}

.grid-hour-cell {
  min-width: 0;
  height: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: "SF Mono", "Monaco", "Inconsolata", "Roboto Mono", "Source Code Pro", monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: 4px;
  transition: all var(--transition);
  flex-shrink: 0;
  width: 100%;
}

.grid-hour-cell:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

@media (min-width: 1400px) {
  .grid-hour-cell {
    height: 36px;
    font-size: 12px;
  }
}

@media (min-width: 1800px) {
  .grid-hour-cell {
    height: 40px;
    font-size: 13px;
  }
}

@media (max-width: 1200px) {
  .grid-hour-cell {
    height: 30px;
    font-size: 11px;
  }
}

@media (max-width: 1024px) {
  .grid-hour-cell {
    height: 28px;
    font-size: 10px;
  }
}

@media (max-width: 768px) {
  .grid-hour-cell {
    height: 26px;
    font-size: 10px;
    min-width: 26px;
  }
}

@media (max-width: 640px) {
  .grid-hour-cell {
    height: 22px;
    font-size: 9px;
    min-width: 22px;
  }
}

@media (max-width: 480px) {
  .grid-hour-cell {
    height: 20px;
    font-size: 8px;
    min-width: 20px;
  }
}

.grid-hour-cell.light {
  background: #ffffff;
  color: var(--text);
}

.grid-hour-cell.evening {
  background: linear-gradient(180deg, 
    rgba(255, 200, 120, 0.15) 0%, 
    transparent 35%),
    #2a3142;
  color: #e0e0e0;
}

.grid-hour-cell.dark {
  background: #1a1f2e;
  color: #b0b0b0;
}

[data-theme="dark"] .grid-hour-cell.light {
  background: #E2E8F0;
  color: #1A202C;
}

[data-theme="dark"] .grid-hour-cell.evening {
  background: linear-gradient(180deg, 
    rgba(255, 200, 120, 0.12) 0%, 
    transparent 35%),
    #2D3748;
  color: #F7FAFC;
}

[data-theme="dark"] .grid-hour-cell.dark {
  background: #2D3748;
  color: #F7FAFC;
}

.grid-hour-cell.light {
  box-shadow: inset 0 0 0 1px rgba(156, 163, 175, 0.4);
}

.grid-hour-cell.current-hour {
  background: var(--accent) !important;
  color: white !important;
  font-weight: 600;
  box-shadow: 0 0 0 2px rgba(49, 130, 206, 0.3);
}

.grid-hour-ampm {
  font-size: 8px;
  line-height: 1;
  margin-top: 1px;
  opacity: 0.8;
  text-align: center;
}

.grid-empty {
  padding: calc(var(--gap-large) * 2);
  text-align: center;
  opacity: 0.7;
  color: var(--muted);
  border-radius: var(--radius);
  background: var(--surface);
}

#gridAddClockSection,
.grid-add-clock-section {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--gap-medium);
  margin-bottom: var(--gap-medium);
}

#gridAddClockSection .select,
.grid-add-clock-section .select {
  min-width: 240px;
}

#gridAddClockSection .select-menu,
.grid-add-clock-section .select-menu {
  top: auto;
  bottom: calc(100% + 8px);
}

@media (max-width: 768px) {
  .grid-timeline {
    grid-template-columns: repeat(24, 28px);
  }
  
  .grid-hour-cell {
    min-width: 28px;
    height: 28px;
    font-size: 10px;
  }
  
  .grid-city-info {
    min-width: 80px; 
  }
  
  .grid-time-info {
    min-width: 70px; 
  }
  
  .grid-city-abbr {
    display: none;
  }
  
  .grid-wrapper::before {
    
    left: var(--current-hour-position-mobile, 250px);
    width: 28px;
    transform: translateX(-50%);
  }
}