/* ===========================
   RESET & ROOT VARIABLES
=========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --morning-color: #f59e0b;
  --morning-bg: #fffbeb;
  --morning-border: #fcd34d;

  --afternoon-color: #3b82f6;
  --afternoon-bg: #eff6ff;
  --afternoon-border: #93c5fd;

  --evening-color: #8b5cf6;
  --evening-bg: #f5f3ff;
  --evening-border: #c4b5fd;

  --night-color: #1e3a5f;
  --night-bg: #e8edf5;
  --night-border: #93afd4;

  --page-bg: #f0f4f8;
  --text-dark: #1a202c;
  --text-muted: #64748b;
  --font-heading: 'Playfair Display', serif;
  --font-body: 'DM Sans', sans-serif;
}

/* ===========================
   BODY & PAGE
=========================== */
body {
  font-family: var(--font-body);
  background-color: var(--page-bg);
  background-image:
    radial-gradient(circle at 20% 20%, rgba(251, 191, 36, 0.07) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.07) 0%, transparent 50%);
  color: var(--text-dark);
  min-height: 100vh;
  padding-bottom: 60px;
}

/* ===========================
   HEADER
=========================== */
header {
  text-align: center;
  padding: 60px 20px 40px;
}

header .subtitle {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

header h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 6vw, 4rem);
  color: var(--text-dark);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

header .date {
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ===========================
   TIMELINE CONTAINER
=========================== */
.timeline {
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 24px;
  position: relative;
}

/* Vertical line running through center */
.timeline::before {
  content: '';
  position: absolute;
  left: 50px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, #fcd34d, #93c5fd, #c4b5fd, #93afd4);
  border-radius: 2px;
  opacity: 0.4;
}

/* ===========================
   TIMELINE BLOCK (wrapper)
=========================== */
.block {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  margin-bottom: 28px;
  position: relative;
  animation: fadeSlideIn 0.5s ease both;
}

.block:nth-child(1) { animation-delay: 0.05s; }
.block:nth-child(2) { animation-delay: 0.1s; }
.block:nth-child(3) { animation-delay: 0.15s; }
.block:nth-child(4) { animation-delay: 0.2s; }
.block:nth-child(5) { animation-delay: 0.25s; }
.block:nth-child(6) { animation-delay: 0.3s; }
.block:nth-child(7) { animation-delay: 0.35s; }
.block:nth-child(8) { animation-delay: 0.4s; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(-18px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ===========================
   TIME BADGE (left column)
=========================== */
.time-badge {
  min-width: 80px;
  text-align: right;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding-top: 18px;
  flex-shrink: 0;
}

/* ===========================
   CARD (right column)
=========================== */
.card {
  flex: 1;
  border-radius: 16px;
  padding: 20px 22px;
  border-left: 4px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 80px; height: 80px;
  border-radius: 50%;
  opacity: 0.06;
  transform: translate(20px, -20px);
}

.card .icon {
  font-size: 1.6rem;
  margin-bottom: 8px;
  line-height: 1;
}

.card h2 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-bottom: 6px;
  line-height: 1.3;
}

.card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  font-weight: 300;
  margin-bottom: 12px;
}

.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(0,0,0,0.06);
  color: var(--text-muted);
}

/* ===========================
   HOVER EFFECT ON CARDS
=========================== */
.card:hover {
  transform: translateY(-4px) translateX(3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

/* ===========================
   MORNING THEME
=========================== */
.morning .card {
  background-color: var(--morning-bg);
  border-left-color: var(--morning-color);
}
.morning .card::before { background: var(--morning-color); }
.morning .card h2 { color: #92400e; }
.morning .time-badge { color: var(--morning-color); font-weight: 600; }

/* ===========================
   AFTERNOON THEME
=========================== */
.afternoon .card {
  background-color: var(--afternoon-bg);
  border-left-color: var(--afternoon-color);
}
.afternoon .card::before { background: var(--afternoon-color); }
.afternoon .card h2 { color: #1e40af; }
.afternoon .time-badge { color: var(--afternoon-color); font-weight: 600; }

/* ===========================
   EVENING THEME
=========================== */
.evening .card {
  background-color: var(--evening-bg);
  border-left-color: var(--evening-color);
}
.evening .card::before { background: var(--evening-color); }
.evening .card h2 { color: #5b21b6; }
.evening .time-badge { color: var(--evening-color); font-weight: 600; }

/* ===========================
   NIGHT THEME
=========================== */
.night .card {
  background-color: var(--night-bg);
  border-left-color: var(--night-color);
}
.night .card::before { background: var(--night-color); }
.night .card h2 { color: var(--night-color); }
.night .time-badge { color: var(--night-color); font-weight: 600; }

/* ===========================
   ACTIVE / CURRENT BLOCK
=========================== */
.block.active .card {
  background: linear-gradient(135deg, #dbeafe, #ede9fe);
  border-left-color: var(--afternoon-color);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.18);
}

.block.active .card h2 {
  color: #1e3a8a;
}

.current-tag {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6) !important;
  color: white !important;
  font-weight: 600 !important;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.85; transform: scale(1.03); }
}

/* ===========================
   FOOTER
=========================== */
footer {
  text-align: center;
  padding: 30px 20px 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 300;
  letter-spacing: 0.05em;
}