:root {
  --font-title: 'Playfair Display', Georgia, 'Times New Roman', Times, serif;
  --font-ui: Arial, Helvetica, sans-serif;
}

/* --- Theme Definitions --- */

/* 1. Light Blue Theme (Default) */
body, body.theme-light-blue {
  --bg-gradient: linear-gradient(135deg, #f0f6fb 0%, #f7fbfd 50%, #e5f0fa 100%);
  --glass-bg: rgba(255, 255, 255, 0.4);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-hover-border: rgba(255, 255, 255, 0.95);
  --glass-shadow: 0 8px 32px 0 rgba(100, 130, 160, 0.08);
  
  --color-text-main: #1e293b;
  --color-text-muted: #57657a;
  --color-accent: #0284c7;
  --color-accent-hover: #0369a1;
  --color-accent-soft: rgba(2, 132, 199, 0.08);
  --color-accent-purple: #6366f1;
  --color-danger: #e11d48;
  
  --bg-body: #f0f6fb;
  --star-color: #0284c7;
  --star-opacity: 0.7;
  --orb-1-color: rgba(99, 102, 241, 0.25);
  --orb-2-color: rgba(2, 132, 199, 0.25);
  
  --day-bg: rgba(255, 255, 255, 0.35);
  --day-border: rgba(255, 255, 255, 0.65);
  --day-hover-bg: rgba(255, 255, 255, 0.75);
  --mini-card-bg: rgba(255, 255, 255, 0.3);
  --mini-card-border: rgba(255, 255, 255, 0.55);
  
  --modal-bg: linear-gradient(180deg, rgba(253, 254, 255, 0.95) 0%, rgba(244, 250, 254, 0.98) 100%);
  --modal-shadow: 0 20px 50px rgba(100, 125, 150, 0.12);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(0, 0, 0, 0.1);
  --input-focus-bg: #ffffff;
  --helper-panel-bg: rgba(0, 0, 0, 0.015);
  --helper-panel-border: rgba(0, 0, 0, 0.04);
}

/* 2. Parchment Theme */
body.theme-parchment {
  --bg-gradient: linear-gradient(135deg, #f8f6f0 0%, #fcfbf7 50%, #f0ebd9 100%);
  --glass-bg: rgba(255, 255, 255, 0.35);
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-hover-border: rgba(255, 255, 255, 0.95);
  --glass-shadow: 0 8px 32px 0 rgba(139, 119, 93, 0.08);
  
  --color-text-main: #332d24;
  --color-text-muted: #7c7263;
  --color-accent: #9e7a33;
  --color-accent-hover: #b8934b;
  --color-accent-soft: rgba(158, 122, 51, 0.08);
  --color-accent-purple: #835a99;
  --color-danger: #c0392b;
  
  --bg-body: #f8f6f0;
  --star-color: #9e7a33;
  --star-opacity: 0.6;
  --orb-1-color: rgba(131, 90, 153, 0.3);
  --orb-2-color: rgba(158, 122, 51, 0.25);
  
  --day-bg: rgba(255, 255, 255, 0.3);
  --day-border: rgba(255, 255, 255, 0.6);
  --day-hover-bg: rgba(255, 255, 255, 0.7);
  --mini-card-bg: rgba(255, 255, 255, 0.25);
  --mini-card-border: rgba(255, 255, 255, 0.4);
  
  --modal-bg: linear-gradient(180deg, rgba(255, 253, 248, 0.95) 0%, rgba(250, 246, 236, 0.98) 100%);
  --modal-shadow: 0 20px 50px rgba(100, 80, 50, 0.15);
  --input-bg: rgba(255, 255, 255, 0.8);
  --input-border: rgba(0, 0, 0, 0.12);
  --input-focus-bg: #ffffff;
  --helper-panel-bg: rgba(0, 0, 0, 0.015);
  --helper-panel-border: rgba(0, 0, 0, 0.04);
}

/* 3. Pure White/Light Theme */
body.theme-neutral {
  --bg-gradient: linear-gradient(135deg, #f3f4f6 0%, #f9fafb 50%, #e5e7eb 100%);
  --glass-bg: rgba(255, 255, 255, 0.5);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-hover-border: rgba(255, 255, 255, 0.98);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
  
  --color-text-main: #1f2937;
  --color-text-muted: #4b5563;
  --color-accent: #4b5563;
  --color-accent-hover: #1f2937;
  --color-accent-soft: rgba(75, 85, 99, 0.08);
  --color-accent-purple: #374151;
  --color-danger: #ef4444;
  
  --bg-body: #f3f4f6;
  --star-color: #4b5563;
  --star-opacity: 0.4;
  --orb-1-color: rgba(156, 163, 175, 0.2);
  --orb-2-color: rgba(209, 213, 219, 0.2);
  
  --day-bg: rgba(255, 255, 255, 0.4);
  --day-border: rgba(255, 255, 255, 0.75);
  --day-hover-bg: rgba(255, 255, 255, 0.8);
  --mini-card-bg: rgba(255, 255, 255, 0.35);
  --mini-card-border: rgba(255, 255, 255, 0.55);
  
  --modal-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(243, 244, 246, 0.98) 100%);
  --modal-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(0, 0, 0, 0.12);
  --input-focus-bg: #ffffff;
  --helper-panel-bg: rgba(0, 0, 0, 0.01);
  --helper-panel-border: rgba(0, 0, 0, 0.04);
}

/* 4. Green Theme (Sage & Mint Garden) */
body.theme-green {
  --bg-gradient: linear-gradient(135deg, #f0f7f4 0%, #f7fbf9 50%, #e3efe9 100%);
  --glass-bg: rgba(255, 255, 255, 0.45);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-hover-border: rgba(255, 255, 255, 0.95);
  --glass-shadow: 0 8px 32px 0 rgba(80, 110, 95, 0.08);
  
  --color-text-main: #1a2e22;
  --color-text-muted: #4d6054;
  --color-accent: #2e7d32;
  --color-accent-hover: #1b5e20;
  --color-accent-soft: rgba(46, 125, 50, 0.08);
  --color-accent-purple: #00796b;
  --color-danger: #c2185b;
  
  --bg-body: #f0f7f4;
  --star-color: #2e7d32;
  --star-opacity: 0.7;
  --orb-1-color: rgba(0, 150, 136, 0.25);
  --orb-2-color: rgba(76, 175, 80, 0.25);
  
  --day-bg: rgba(255, 255, 255, 0.4);
  --day-border: rgba(255, 255, 255, 0.7);
  --day-hover-bg: rgba(255, 255, 255, 0.8);
  --mini-card-bg: rgba(255, 255, 255, 0.35);
  --mini-card-border: rgba(255, 255, 255, 0.55);
  
  --modal-bg: linear-gradient(180deg, rgba(253, 255, 254, 0.96) 0%, rgba(242, 249, 245, 0.98) 100%);
  --modal-shadow: 0 20px 50px rgba(80, 100, 90, 0.12);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(0, 0, 0, 0.1);
  --input-focus-bg: #ffffff;
  --helper-panel-bg: rgba(0, 0, 0, 0.01);
  --helper-panel-border: rgba(0, 0, 0, 0.04);
}

/* 5. Red Theme (Sunset Crimson) */
body.theme-red {
  --bg-gradient: linear-gradient(135deg, #faf0f0 0%, #fdf7f7 50%, #f5e4e4 100%);
  --glass-bg: rgba(255, 255, 255, 0.4);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-hover-border: rgba(255, 255, 255, 0.98);
  --glass-shadow: 0 8px 32px 0 rgba(160, 100, 100, 0.08);
  
  --color-text-main: #3f1a1a;
  --color-text-muted: #7c5454;
  --color-accent: #c0392b;
  --color-accent-hover: #962d22;
  --color-accent-soft: rgba(192, 57, 43, 0.08);
  --color-accent-purple: #d35400;
  --color-danger: #9b1c1c;
  
  --bg-body: #faf0f0;
  --star-color: #c0392b;
  --star-opacity: 0.7;
  --orb-1-color: rgba(231, 76, 60, 0.25);
  --orb-2-color: rgba(230, 126, 34, 0.25);
  
  --day-bg: rgba(255, 255, 255, 0.35);
  --day-border: rgba(255, 255, 255, 0.7);
  --day-hover-bg: rgba(255, 255, 255, 0.75);
  --mini-card-bg: rgba(255, 255, 255, 0.3);
  --mini-card-border: rgba(255, 255, 255, 0.55);
  
  --modal-bg: linear-gradient(180deg, rgba(255, 253, 253, 0.96) 0%, rgba(250, 242, 242, 0.98) 100%);
  --modal-shadow: 0 20px 50px rgba(150, 100, 100, 0.12);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(0, 0, 0, 0.1);
  --input-focus-bg: #ffffff;
  --helper-panel-bg: rgba(0, 0, 0, 0.015);
  --helper-panel-border: rgba(0, 0, 0, 0.04);
}

/* 6. Dark Theme (Starry Night) */
body.theme-dark {
  --bg-gradient: linear-gradient(135deg, #090615 0%, #110926 50%, #030207 100%);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover-border: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  
  --color-text-main: #f0f0f5;
  --color-text-muted: #a0a0c0;
  --color-accent: #dfba73;
  --color-accent-hover: #f3d18e;
  --color-accent-soft: rgba(223, 186, 115, 0.15);
  --color-accent-purple: #c39bd3;
  --color-danger: #e74c3c;
  
  --bg-body: #090615;
  --star-color: #ffffff;
  --star-opacity: 0.35;
  --orb-1-color: rgba(195, 155, 211, 0.2);
  --orb-2-color: rgba(223, 186, 115, 0.15);
  
  --day-bg: rgba(255, 255, 255, 0.02);
  --day-border: rgba(255, 255, 255, 0.05);
  --day-hover-bg: rgba(255, 255, 255, 0.08);
  --mini-card-bg: rgba(255, 255, 255, 0.01);
  --mini-card-border: rgba(255, 255, 255, 0.03);
  
  --modal-bg: linear-gradient(180deg, rgba(20, 15, 38, 0.95) 0%, rgba(10, 6, 20, 0.98) 100%);
  --modal-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  --input-bg: rgba(0, 0, 0, 0.3);
  --input-border: rgba(255, 255, 255, 0.08);
  --input-focus-bg: rgba(0, 0, 0, 0.5);
  --helper-panel-bg: rgba(255, 255, 255, 0.015);
  --helper-panel-border: rgba(255, 255, 255, 0.04);
}

/* --- Layout & Typography Helpers --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-ui);
  color: var(--color-text-main);
  background: var(--bg-body);
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  justify-content: center;
  transition: background 0.5s ease;
}

/* --- Animated Light Sky Background --- */
.starry-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-gradient);
  z-index: -2;
  overflow: hidden;
  transition: background 0.5s ease;
}

/* Speckles representing starry sky */
.stars {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(1.5px 1.5px at 20px 30px, var(--star-color), rgba(0,0,0,0)),
    radial-gradient(2px 2px at 40px 70px, var(--star-color), rgba(0,0,0,0)),
    radial-gradient(1px 1px at 90px 10px, var(--star-color), rgba(0,0,0,0)),
    radial-gradient(2px 2px at 150px 120px, var(--star-color), rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 220px 60px, var(--star-color), rgba(0,0,0,0)),
    radial-gradient(2px 2px at 280px 200px, var(--star-color), rgba(0,0,0,0));
  background-repeat: repeat;
  background-size: 300px 300px;
  opacity: var(--star-opacity);
  animation: drift 250s linear infinite;
  transition: opacity 0.5s ease;
}

@keyframes drift {
  from { background-position: 0 0; }
  to { background-position: 300px 600px; }
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  z-index: -1;
  opacity: 0.35;
  transition: background 0.5s ease;
}

.glow-1 {
  top: 10%;
  right: 15%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, var(--orb-1-color) 0%, rgba(255,255,255,0) 70%);
  animation: float 20s ease-in-out infinite alternate;
}

.glow-2 {
  bottom: 15%;
  left: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--orb-2-color) 0%, rgba(255,255,255,0) 70%);
  animation: float 25s ease-in-out infinite alternate-reverse;
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  100% { transform: translateY(-30px) scale(1.1); }
}

/* --- Container & Layout --- */
.app-container {
  width: 100%;
  max-width: 1200px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
}

/* --- Header --- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo h1 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 500;
  letter-spacing: 1px;
  background: linear-gradient(45deg, var(--color-text-main), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.feather-icon {
  font-size: 1.6rem;
  filter: drop-shadow(0 0 3px rgba(2, 132, 199, 0.2));
}

/* --- Theme Switcher Style --- */
.theme-switcher {
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(255, 255, 255, 0.25);
  border: 1.5px solid var(--glass-border);
  padding: 6px 12px;
  border-radius: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

body.theme-dark .theme-switcher {
  background: rgba(0, 0, 0, 0.2);
}

.theme-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: inset 0 0 3px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.15);
}

.theme-dot:hover {
  transform: scale(1.25);
}

.theme-dot.active {
  border-color: var(--color-text-main);
  transform: scale(1.15);
  box-shadow: 0 0 8px var(--color-accent);
}

.dot-light-blue { background: #0284c7; }
.dot-parchment { background: #9e7a33; }
.dot-neutral { background: #ffffff; border: 1.5px solid rgba(0, 0, 0, 0.15); }
.dot-green { background: #2e7d32; }
.dot-red { background: #c0392b; }
.dot-dark { background: #7c5295; border: 1px solid rgba(255,255,255,0.3); }

/* --- Glassmorphic Styles --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--glass-hover-border);
}

/* --- Main Layout Grid --- */
.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
  flex-grow: 1;
}

/* --- Left Column: Active Day Card --- */
.active-day-section {
  position: sticky;
  top: 20px;
}

.active-day-card {
  padding: 30px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0.15) 100%);
}

body.theme-dark .active-day-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
}

.active-day-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.poetic-season {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent-purple);
}

.edit-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 6px;
  border-radius: 50%;
  transition: var(--transition-smooth);
  opacity: 0.7;
}

body.theme-dark .edit-btn {
  color: #fff;
}

.edit-btn:hover {
  opacity: 1;
  transform: scale(1.1);
  background: rgba(0, 0, 0, 0.03);
}

body.theme-dark .edit-btn:hover {
  background: rgba(255, 255, 255, 0.05);
}

.active-date {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 30px;
  color: var(--color-text-main);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

body.theme-dark .active-date {
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.active-date-sub {
  display: none;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.poem-display-area {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 200px;
}

.poem-title {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-style: italic;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.poem-text {
  font-family: var(--font-title);
  font-size: 1.15rem;
  line-height: 1.8;
  white-space: pre-wrap;
  color: var(--color-text-main);
  text-shadow: 0 1px 0px rgba(255,255,255,0.7);
}

body.theme-dark .poem-text {
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* Empty State Inspiring Invitation */
.empty-state {
  display: flex;
  flex-direction: column;
  gap: 25px;
  width: 100%;
}

.empty-quote {
  font-family: var(--font-title);
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  text-shadow: 0 1px 0 rgba(255,255,255,0.7);
}

body.theme-dark .empty-quote {
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.empty-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.card-footer {
  margin-top: 30px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding-top: 15px;
  text-align: center;
}

body.theme-dark .card-footer {
  border-top-color: rgba(255,255,255,0.05);
}

.footer-note {
  font-size: 0.8rem;
  font-style: italic;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

/* --- Right Column: Calendar Panel --- */
.calendar-card {
  padding: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0.2) 100%);
}

body.theme-dark .calendar-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
}

.calendar-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  flex-wrap: wrap;
  gap: 15px;
}

.view-toggle {
  display: flex;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid rgba(0, 0, 0, 0.05);
  padding: 4px;
  border-radius: 12px;
}

body.theme-dark .view-toggle {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.05);
}

.toggle-btn {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.toggle-btn.active {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid rgba(2, 132, 199, 0.2);
  text-shadow: 0 0 5px rgba(2, 132, 199, 0.1);
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.05);
}

body.theme-dark .toggle-btn.active {
  border-color: rgba(223, 186, 115, 0.3);
  box-shadow: 0 0 5px rgba(223, 186, 115, 0.2);
}

.navigation-controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-arrow-btn {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--color-text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  font-size: 0.8rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}

body.theme-dark .nav-arrow-btn {
  background: rgba(255, 255, 255, 0.03);
}

.nav-arrow-btn:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-color: rgba(2, 132, 199, 0.3);
}

.calendar-title {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 500;
  min-width: 140px;
  text-align: center;
  color: var(--color-text-main);
}

/* --- Month View --- */
.weekdays-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  padding-bottom: 8px;
}

body.theme-dark .weekdays-grid {
  border-bottom-color: rgba(255,255,255,0.05);
}

.days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.calendar-day {
  aspect-ratio: 1;
  background: var(--day-bg);
  border: 1px solid var(--day-border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
  padding: 10px;
  font-size: 0.9rem;
  cursor: pointer;
  position: relative;
  transition: var(--transition-smooth);
  box-shadow: var(--glass-shadow);
}

.calendar-day:hover:not(.empty-day) {
  background: var(--day-hover-bg);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.calendar-day.empty-day {
  background: transparent;
  border-color: transparent;
  cursor: default;
  box-shadow: none;
}

.calendar-day.today {
  border: 1.5px solid var(--color-accent-purple);
  background: rgba(99, 102, 241, 0.04);
  font-weight: 600;
}

body.theme-dark .calendar-day.today {
  background: rgba(195, 155, 211, 0.05);
}

.calendar-day.selected {
  border: 1.5px solid var(--color-accent);
  background: var(--color-accent-soft);
}

.calendar-day.has-event::after {
  content: '✦';
  position: absolute;
  bottom: 8px;
  left: 10px;
  font-size: 0.8rem;
  color: var(--color-accent);
  text-shadow: 0 0 3px var(--color-accent);
  animation: shine 3s infinite alternate;
}

@keyframes shine {
  0% { transform: scale(0.9); opacity: 0.7; }
  100% { transform: scale(1.2); opacity: 1; filter: drop-shadow(0 0 1px var(--color-accent)); }
}

.day-number {
  color: var(--color-text-main);
  opacity: 0.85;
}

.calendar-day.selected .day-number, 
.calendar-day.today .day-number {
  opacity: 1;
}

/* --- Year View --- */
.year-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.mini-month-card {
  padding: 15px;
  border-radius: 14px;
  background: var(--mini-card-bg);
  border: 1px solid var(--mini-card-border);
  transition: var(--transition-smooth);
}

.mini-month-card:hover {
  background: var(--day-hover-bg);
  border-color: var(--color-accent);
  transform: scale(1.02);
}

.mini-month-name {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 500;
  text-align: center;
  margin-bottom: 10px;
  color: var(--color-accent);
  cursor: pointer;
}

.mini-month-name:hover {
  text-decoration: underline;
}

.mini-weekdays-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 5px;
}

.mini-days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
}

.mini-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  border-radius: 3px;
  color: var(--color-text-main);
  opacity: 0.6;
  cursor: pointer;
}

.mini-day:hover:not(.mini-empty) {
  background: var(--day-hover-bg);
  opacity: 1;
}

.mini-day.mini-empty {
  cursor: default;
}

.mini-day.has-event {
  background: var(--color-accent-soft);
  border: 0.5px solid var(--color-accent);
  color: var(--color-accent);
  font-weight: 600;
  opacity: 1;
}

.mini-day.today {
  border: 0.5px solid var(--color-accent-purple);
  color: var(--color-accent-purple);
  font-weight: 600;
  opacity: 1;
}

.mini-day.selected {
  border: 0.5px solid var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 600;
  opacity: 1;
}

/* --- Helper Utilities --- */
.hidden {
  display: none !important;
}

/* --- Buttons --- */
button {
  font-family: var(--font-ui);
  transition: var(--transition-smooth);
}

.primary-btn {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  border: none;
  color: #fff;
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

body.theme-dark .primary-btn {
  color: #1e1302;
  text-shadow: none;
}

.primary-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

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

.secondary-btn {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: var(--color-text-main);
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 12px;
  cursor: pointer;
}

body.theme-dark .secondary-btn {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--color-text-main);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(0, 0, 0, 0.15);
}

body.theme-dark .secondary-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.danger-btn {
  background: rgba(225, 29, 72, 0.06);
  border: 1px solid rgba(225, 29, 72, 0.25);
  color: var(--color-danger);
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 12px;
  cursor: pointer;
}

.danger-btn:hover {
  background: rgba(225, 29, 72, 0.15);
  border-color: var(--color-danger);
}

.icon-btn {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--glass-border);
  color: var(--color-text-main);
  padding: 8px 16px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--color-accent);
}

.pulse {
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.25); }
  70% { box-shadow: 0 0 0 10px rgba(2, 132, 199, 0); }
  100% { box-shadow: 0 0 0 0 rgba(2, 132, 199, 0); }
}

body.theme-dark .pulse {
  animation: pulse-glow-dark 2s infinite;
}

@keyframes pulse-glow-dark {
  0% { box-shadow: 0 0 0 0 rgba(223, 186, 115, 0.3); }
  70% { box-shadow: 0 0 0 10px rgba(223, 186, 115, 0); }
  100% { box-shadow: 0 0 0 0 rgba(223, 186, 115, 0); }
}

/* --- Modals --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 1;
  transition: var(--transition-smooth);
}

body.theme-dark .modal-overlay {
  background: rgba(4, 2, 10, 0.65);
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-content {
  width: 100%;
  max-width: 500px;
  padding: 30px;
  position: relative;
  animation: modal-enter 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  background: var(--modal-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--modal-shadow);
}

.modal-content-wide {
  max-width: 800px;
}

@keyframes modal-enter {
  from { transform: scale(0.95) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding-bottom: 12px;
}

body.theme-dark .modal-header {
  border-bottom-color: rgba(255,255,255,0.05);
}

.modal-header h2 {
  font-family: var(--font-title);
  font-weight: 500;
  color: var(--color-text-main);
  font-size: 1.4rem;
}

.close-modal-btn {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition-smooth);
}

.close-modal-btn:hover {
  color: var(--color-text-main);
}

.modal-body {
  margin-bottom: 25px;
}

.modal-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.5;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding-top: 20px;
}

body.theme-dark .modal-footer {
  border-top-color: rgba(255,255,255,0.05);
}

/* --- Edit Split layout --- */
.edit-split {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
}

@media (max-width: 768px) {
  .edit-split {
    grid-template-columns: 1fr;
  }
}

.ai-helper-panel {
  background: var(--helper-panel-bg);
  border: 1px solid var(--helper-panel-border);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.ai-helper-panel h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-accent);
  letter-spacing: 0.5px;
}

.helper-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-bottom: 15px;
}

/* --- Form Fields --- */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  padding: 12px;
  font-family: var(--font-ui);
  color: var(--color-text-main);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-soft);
  background: var(--input-focus-bg);
}

.textarea-poetic {
  font-family: var(--font-title);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.5;
  text-align: left;
  resize: vertical;
}

.form-help {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 5px;
}

.ai-btn {
  background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
  border: none;
  color: #fff;
  padding: 12px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
  width: 100%;
}

.ai-btn:hover {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  box-shadow: 0 6px 15px rgba(79, 70, 229, 0.3);
}

.btn-spinner {
  display: inline-block;
  animation: rotate-spin 2s linear infinite;
}

@keyframes rotate-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-message {
  margin-top: 15px;
  padding: 12px;
  border-radius: 8px;
  background: rgba(225, 29, 72, 0.05);
  border: 1px solid rgba(225, 29, 72, 0.15);
  color: #be123c;
  font-size: 0.85rem;
  line-height: 1.4;
}

/* --- Responsive Adjustments --- */
@media (max-width: 950px) {
  .main-content {
    grid-template-columns: 1fr;
  }
  
  .active-day-section {
    position: static;
  }
  
  .active-day-card {
    min-height: auto;
  }
}

@media (max-width: 600px) {
  .app-container {
    padding: 10px;
  }
  
  .app-header {
    margin-bottom: 20px;
    flex-direction: column;
    gap: 15px;
    align-items: center;
  }
  
  .calendar-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .navigation-controls {
    justify-content: space-between;
  }
  
  .year-grid {
    grid-template-columns: 1fr;
  }
  
  .calendar-day {
    padding: 6px;
    font-size: 0.8rem;
  }
  
  .calendar-day.has-event::after {
    bottom: 4px;
    left: 6px;
    font-size: 0.7rem;
  }
}