/* Calendar Shared Styles */

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a1a;
  --text-secondary: #6c757d;
  --text-tertiary: #adb5bd;
  --border-color: #dee2e6;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --card-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
  --accent-primary: #4a90e2;
  --accent-secondary: #667eea; /* Adjusted accent for special days */
  --today-bg: #e3f2fd;
  --today-border: #2196f3;
  --header-bg: #f1f3f5;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --vernal-color: #10b981;
  --summer-color: #f59e0b;
  --autumn-color: #ef4444;
  --winter-color: #3b82f6;
  --moon-color: #a7a8a9;
  --grid-gap: 1px; /* Reduced gap for tighter grid */
}

[data-theme="dark"] {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #2a2c41;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --border-color: #3a3b53;
  --card-bg: #27293d;
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.4);
  --accent-primary: #60a5fa;
  --accent-secondary: #a3a1f7; /* Adjusted accent */
  --today-bg: #1e3a5f;
  --today-border: #3b82f6;
  --header-bg: #1e293b;
  --vernal-color: #34d399;
  --summer-color: #fbbf24;
  --autumn-color: #f87171;
  --winter-color: #60a5fa;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-primary); color: var(--text-primary);
  line-height: 1.5; transition: background 0.3s, color 0.3s;
  overscroll-behavior: none;
  display: flex; /* Enable flex for viewport height */
  flex-direction: column;
  min-height: 100vh; /* Ensure body takes full viewport height */
}
.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0.5rem;
  width: 100%; /* Ensure container takes full width */
  flex-grow: 1; /* Allow container to fill body */
  display: flex;
  flex-direction: column;
}

/* --- Header & Controls --- */
header { text-align: center; padding: 1.5rem 0.5rem; background: var(--bg-secondary); border-radius: 12px; margin-bottom: 0.5rem; box-shadow: var(--card-shadow); flex-shrink: 0; /* Prevent header from shrinking */ }
h1 { font-size: clamp(1.25rem, 4vw, 2rem); font-weight: 700; background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 1rem; }
.controls { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: center; margin-top: 1rem; }
.control-group { display: flex; align-items: center; gap: 0.5rem; }
label { font-weight: 600; color: var(--text-secondary); font-size: 0.9rem; }
input[type="number"] { padding: 0.5rem 0.75rem; border: 2px solid var(--border-color); border-radius: 8px; background: var(--card-bg); color: var(--text-primary); font-size: 1rem; width: 90px; transition: var(--transition); -moz-appearance: textfield; }
input[type="number"]::-webkit-inner-spin-button, input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"]:focus { outline: none; border-color: var(--accent-primary); box-shadow: 0 0 0 3px rgba(var(--accent-primary), 0.3); }
.theme-toggle { padding: 0.5rem 1rem; border: 2px solid var(--border-color); border-radius: 8px; background: var(--card-bg); color: var(--text-primary); font-size: 0.9rem; cursor: pointer; transition: var(--transition); display: flex; align-items: center; gap: 0.5rem; font-weight: 600; }
.theme-toggle:hover { background: var(--bg-tertiary); transform: translateY(-2px); }

/* --- Navigation --- */
.nav-controls { display: flex; gap: 0.5rem; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; position: sticky; top: 0.5rem; z-index: 100; background: var(--bg-primary); padding: 0.5rem; border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); border: 1px solid var(--border-color); flex-shrink: 0; /* Prevent nav from shrinking */ }
.nav-btn { padding: 0.5rem 1rem; border: 2px solid var(--border-color); border-radius: 8px; background: var(--card-bg); color: var(--text-primary); font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; gap: 0.25rem; box-shadow: var(--card-shadow); flex-shrink: 0; }
.nav-btn:hover:not(:disabled) { background: var(--accent-primary); color: white; transform: translateY(-2px); box-shadow: var(--card-shadow-hover); }
.nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.month-indicator { padding: 0.5rem 1rem; background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); color: white; border-radius: 8px; font-weight: 700; font-size: 1rem; flex-grow: 1; text-align: center; box-shadow: var(--card-shadow); }
.month-title-main { display: block; font-size: 1em; }
.month-title-sub { display: block; font-size: 0.75em; opacity: 0.85; font-weight: 500; }

/* --- Extra Days Display (Solar Calendar) --- */
.year-extra-days { padding: 0.75rem; margin-bottom: 0.5rem; background: var(--bg-secondary); border-radius: 8px; text-align: center; box-shadow: var(--card-shadow); border: 1px solid var(--border-color); flex-shrink: 0; /* Prevent from shrinking */ }
.year-extra-days h3 { margin-bottom: 0.25rem; color: var(--accent-secondary); font-size: 0.9rem; }
.year-extra-days span { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500;}

/* --- Astronomical Events --- */
.astronomical-events { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); /* Adjusted minmax */ gap: 0.5rem; margin-bottom: 0.5rem; padding: 0.5rem; background: var(--bg-secondary); border-radius: 12px; box-shadow: var(--card-shadow); flex-shrink: 0; /* Prevent from shrinking */ }
.astro-event { padding: 0.75rem; background: var(--card-bg); border-radius: 8px; border: 2px solid var(--border-color); cursor: pointer; transition: var(--transition); position: relative; text-align: center; }
.astro-event:hover { transform: translateY(-2px); box-shadow: var(--card-shadow-hover); }
.astro-event.vernal { border-color: var(--vernal-color); } .astro-event.vernal .astro-event-title { color: var(--vernal-color); }
.astro-event.summer { border-color: var(--summer-color); } .astro-event.summer .astro-event-title { color: var(--summer-color); }
.astro-event.autumn { border-color: var(--autumn-color); } .astro-event.autumn .astro-event-title { color: var(--autumn-color); }
.astro-event.winter { border-color: var(--winter-color); } .astro-event.winter .astro-event-title { color: var(--winter-color); }
.astro-event-title { font-weight: 700; font-size: 0.8rem; margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.5px; }
.astro-event-date { font-size: 0.9rem; color: var(--text-primary); font-weight: 600; }
.astro-event-icon { font-size: 1.1rem; margin-bottom: 0.25rem; }
.astro-tooltip { position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%) translateY(-8px); background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 0.5rem 0.75rem; box-shadow: var(--card-shadow-hover); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; white-space: nowrap; z-index: 1000; font-size: 0.8rem; }
.astro-event:hover .astro-tooltip { opacity: 1; transform: translateX(-50%) translateY(-12px); }

/* --- Calendar Grid --- */
#calendar-container {
    position: relative;
    flex-grow: 1; /* Key change: Allow this container to fill remaining space */
    display: flex; /* Use flex to make the active month fill it */
    flex-direction: column;
}
.month { display: none; margin-bottom: 0; /* Removed bottom margin */ }
.month.active {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    /* Define rows: auto for header, 1fr for each week to distribute space */
    grid-template-rows: auto repeat(4, 1fr); /* For 13x28 calendar */
    gap: var(--grid-gap);
    background: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    animation: fadeIn 0.3s ease;
    flex-grow: 1; /* Key change: Make active month fill calendar-container */
    height: 100%; /* Ensure it takes full height of container */
}
.month.active.leap {
    grid-template-rows: auto repeat(5, 1fr);
}
/* Adjust grid rows for Gregorian calendar (can have up to 6 weeks) */
.gregorian-calendar .month.active { /* Add class to body in gregorian-calendar.html */
    grid-template-rows: auto repeat(6, 1fr);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } } /* Simplified fade */
.header { background: var(--header-bg); padding: 0.5rem 0.25rem; /* Reduced padding */ text-align: center; font-weight: 700; font-size: 0.75rem; color: var(--text-secondary); }

/* --- Day Cell --- */
.day {
    background: var(--card-bg);
    border: none;
    padding: 0.35rem; /* Slightly reduced padding */
    cursor: pointer;
    transition: background 0.2s;
    /* min-height removed - height controlled by grid-template-rows */
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    height: 100%; /* Ensure day fills grid cell */
}
.day:hover { background: var(--bg-tertiary); z-index: 10; position: relative; }
.day.empty { background: var(--bg-secondary); cursor: default; }
.day.empty:hover { background: var(--bg-secondary); }
.day.today { background: var(--today-bg); box-shadow: inset 0 0 0 2px var(--today-border); z-index: 5; position: relative; }
.day.new-moon { box-shadow: inset 0 0 0 3px var(--moon-color); }
.day.vernal-equinox { box-shadow: inset 0 0 0 3px var(--vernal-color); }
.day.summer-solstice { box-shadow: inset 0 0 0 3px var(--summer-color); }
.day.autumn-equinox { box-shadow: inset 0 0 0 3px var(--autumn-color); }
.day.winter-solstice { box-shadow: inset 0 0 0 3px var(--winter-color); }
.day.today.new-moon { box-shadow: inset 0 0 0 2px var(--today-border), inset 0 0 0 5px var(--moon-color); }
.day.today.vernal-equinox { box-shadow: inset 0 0 0 2px var(--today-border), inset 0 0 0 5px var(--vernal-color); }
.day.today.summer-solstice { box-shadow: inset 0 0 0 2px var(--today-border), inset 0 0 0 5px var(--summer-color); }
.day.today.autumn-equinox { box-shadow: inset 0 0 0 2px var(--today-border), inset 0 0 0 5px var(--autumn-color); }
.day.today.winter-solstice { box-shadow: inset 0 0 0 2px var(--today-border), inset 0 0 0 5px var(--winter-color); }
.day-number { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.15rem; } /* Solar day number */
.day.today .day-number { color: var(--today-border); font-weight: 900; }
.astro-badge { position: absolute; top: 0.25rem; right: 0.25rem; font-size: 0.9rem; z-index: 2; line-height: 1; }
.gregorian-date { font-size: 0.7rem; color: var(--text-secondary); font-weight: 600; margin-top: auto; } /* Gregorian info in Solar view */

/* --- Gregorian Calendar Specific Day Styles --- */
.day-ordinal { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.15rem; } /* Gregorian day number */
.day-label { font-size: 0.6rem; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.1rem; }
.day-solar { font-size: 0.65rem; color: var(--text-secondary); font-weight: 500; }
.solar-info { display: flex; flex-direction: column; gap: 0.1rem; margin-top: 0.3rem; }
.solar-month-name { font-weight: 600; color: var(--accent-primary); }
.solar-day-number { color: var(--text-secondary); }
.special-day { font-weight: 700; color: var(--accent-secondary); font-size: 0.7rem; text-align: center; margin-top: 0.3rem; }

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
  .container { padding: 0.25rem; }
  header { padding: 1rem 0.5rem; margin-bottom: 0.5rem; border-radius: 8px; }
  h1 { font-size: 1.1rem; }
  .controls { gap: 0.5rem; }
  .nav-controls { flex-wrap: wrap; gap: 0.25rem; top: 0; border-radius: 0; padding: 0.25rem; }
  .nav-btn { padding: 0.5rem 0.4rem; font-size: 0.7rem; flex-grow: 1; }
  .month-indicator { order: -1; width: 100%; font-size: 0.8rem; padding: 0.4rem; margin-bottom: 0.25rem; }
  .year-extra-days { padding: 0.5rem; margin-bottom: 0.5rem; } .year-extra-days h3 { font-size: 0.8rem; } .year-extra-days span { font-size: 0.75rem; }
  .astronomical-events { grid-template-columns: repeat(2, 1fr); gap: 0.25rem; padding: 0.25rem; margin-bottom: 0.5rem; }
  .astro-event { padding: 0.5rem; } .astro-event-title { font-size: 0.65rem; } .astro-event-date { font-size: 0.7rem; } .astro-event-icon { font-size: 0.9rem; }
  .month.active { gap: 1px; border-radius: 8px; }
  .day { padding: 0.2rem; font-size: 0.65rem; /* min-height removed */ }
  .header { padding: 0.4rem 0.1rem; font-size: 0.6rem; font-weight: 600; }
  .day-number, .day-ordinal { font-size: 0.8rem; }
  .astro-badge { font-size: 0.7rem; top: 0.15rem; right: 0.15rem; }
  .gregorian-date, .day-solar { font-size: 0.55rem; }
  .day-label { font-size: 0.5rem; } .special-day { font-size: 0.6rem; }
}
@media (max-width: 480px) {
    /* Further reduce sizes for smallest screens */
    h1 { font-size: 1rem; }
    .nav-btn { font-size: 0.65rem; padding: 0.4rem; }
    .month-indicator { font-size: 0.75rem; }
    .header { font-size: 0.55rem; padding: 0.3rem 0; }
    .day { padding: 0.15rem; }
    .day-number, .day-ordinal { font-size: 0.7rem; }
    .gregorian-date, .day-solar, .special-day, .day-label { font-size: 0.5rem; }
    .astro-badge { font-size: 0.6rem; }
    .astronomical-events { grid-template-columns: 1fr; } /* Stack events on smallest */
}