:root {
  --bg: #000;
  --container-bg: #111;
  --container-shadow: #900a;
  --clock-bg: #000;
  --clock-shadow: #800a;
  --clock-color: #ff2222;
  --text-color: #f00;
  --secondary: #fcc;
  --label: #faa;
  --select-bg: #1a0000;
  --select-color: #f44;
  --toggle-bg: #330000;
  --toggle-knob: #f22;
  --toggle-shadow: #a00a;
}

/* --- Light Themes --- */

/* Crimson Day (Light Red) */
body.crimson-day {
  --bg: #fff7f7;
  --container-bg: #fff2f2;
  --container-shadow: #c700221a;
  --clock-bg: #fff7f7;
  --clock-shadow: #c7002233;
  --clock-color: #b6000f;
  --text-color: #b6000f;
  --secondary: #ea6270;
  --label: #930017;
  --select-bg: #fff2f2;
  --select-color: #b6000f;
  --toggle-bg: #f9d6d6;
  --toggle-knob: #b6000f;
  --toggle-shadow: #c7002244;
}
/* Sky Day (Light Blue) */
body.sky-day {
  --bg: #f4f8fd;
  --container-bg: #f0f8ff;
  --container-shadow: #004eb61a;
  --clock-bg: #f4f8fd;
  --clock-shadow: #004eb633;
  --clock-color: #004eb6;
  --text-color: #004eb6;
  --secondary: #448aff;
  --label: #0b3466;
  --select-bg: #eaf3fb;
  --select-color: #004eb6;
  --toggle-bg: #d8e9fa;
  --toggle-knob: #004eb6;
  --toggle-shadow: #004eb644;
}
/* Meadow Day (Light Green) */
body.meadow-day {
  --bg: #f6fff7;
  --container-bg: #edfff1;
  --container-shadow: #1079001a;
  --clock-bg: #f6fff7;
  --clock-shadow: #10790033;
  --clock-color: #107900;
  --text-color: #107900;
  --secondary: #00a84f;
  --label: #085d24;
  --select-bg: #edfff1;
  --select-color: #107900;
  --toggle-bg: #e4fae6;
  --toggle-knob: #107900;
  --toggle-shadow: #10790044;
}
/* Midnight Blue theme */
body.midnight-blue {
  --bg: #011022;
  --container-bg: #102036;
  --container-shadow: #0080ff66;
  --clock-bg: #011d38;
  --clock-shadow: #0066ff44;
  --clock-color: #33aaff;
  --text-color: #33aaff;
  --secondary: #cce6ff;
  --label: #aaddee;
  --select-bg: #012040;
  --select-color: #33aaff;
  --toggle-bg: #16334b;
  --toggle-knob: #33aaff;
  --toggle-shadow: #0080ff66;
}

@media (max-width: 700px) {
  .container {
    padding: 0.5rem 0.2rem 1.3rem 0.2rem;
    border-radius: 1rem;
    margin: 0.7rem;
  }
  h1 {
    font-size: 1.6rem;
    padding: 0.5em 0;
  }
  .theme-controls label,
  .toggle-container label,
  label[for="timezone-select"] {
    font-size: 0.98rem;
  }
  .digital-clock {
    font-size: 2.3rem;
    padding: 0.3em 0.2em;
    border-radius: 0.8em;
  }
  .digital-date {
    font-size: 0.96rem;
    margin-bottom: 0.7rem;
  }
  .controls {
    gap: 0.6em;
  }
  select,
  #theme-select {
    font-size: 1rem;
    min-width: 0;
    width: 100%;
    max-width: 350px;
  }
  .theme-controls,
  .toggle-container {
    flex-direction: row;
    gap: 0.3em;
    font-size: 1rem;
    justify-content: flex-start;
    margin-bottom: 1.2em;
  }
  #hour-label {
    font-size: 1.1rem;
  }
}

@media (max-width: 420px) {
  .container {
    padding: 0.3rem 0.05rem 1rem 0.05rem;
    border-radius: 0.7rem;
    margin: 0.2rem;
  }
  h1 {
    font-size: 1.15rem;
    letter-spacing: 0.01em;
  }
  .digital-clock {
    font-size: 1.25rem;
    padding: 0.23em 0.09em;
    border-radius: 0.4em;
    min-width: 110px;
  }
  .digital-date {
    font-size: 0.74rem;
    margin-bottom: 0.5rem;
  }
  label, #hour-label, select {
    font-size: 0.95rem;
  }
}

/* Forest Green theme */
body.forest-green {
  --bg: #001a08;
  --container-bg: #17351a;
  --container-shadow: #16c41a66;
  --clock-bg: #0f2c0f;
  --clock-shadow: #008a0044;
  --clock-color: #19e619;
  --text-color: #19e619;
  --secondary: #c9ffd1;
  --label: #91eeb1;
  --select-bg: #103a17;
  --select-color: #19e619;
  --toggle-bg: #134c1b;
  --toggle-knob: #19e619;
  --toggle-shadow: #00e10066;
}

/* Use vars throughout */
body {
  background: var(--bg);
  color: var(--text-color);
}
.container {
  background: var(--container-bg);
  box-shadow: 0 0 40px var(--container-shadow);
}
.digital-clock {
  word-break: break-all;
  white-space: pre-line;
  background: var(--clock-bg);
  box-shadow: 0 0 40px var(--clock-shadow);
  color: var(--clock-color);
}
.digital-date {
  color: var(--secondary);
}
label {
  color: var(--label);
}
select {
  background: var(--select-bg);
  color: var(--select-color);
}
/* Toggle */
.toggle-container {}
.switch .slider {
  background-color: var(--toggle-bg);
  box-shadow: 0 0 8px var(--toggle-shadow);
}
.switch .slider:before {
  background-color: var(--toggle-knob);
  box-shadow: 0 0 4px var(--toggle-knob);
}
input:checked + .slider {
  background-color: var(--toggle-bg);
}
input:checked + .slider:before {
  background-color: var(--toggle-knob);
  box-shadow: 0 0 4px var(--toggle-knob);
  transform: translateX(22px);
}
#hour-label {
  color: var(--label);
}
.theme-controls {
  margin-bottom: 0.8em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
}

/* Digital Clock - Red on Black */

body {
  /* background: #000;
  color: #f00; */
  background: var(--bg);
  color: var(--text-color);
  font-family: 'Courier New', Courier, monospace;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}

.container {
  text-align: center;
  /* background: #111; */
  background: var(--container-bg);
  border-radius: 1.5rem;
  padding: 2rem 2.5rem 2.5rem 2.5rem;
  box-shadow: 0 0 40px var(--container-shadow);
  /* box-shadow: 0 0 40px #900a; */
}

h1 {
  margin-bottom: 1.5rem;
  letter-spacing: 0.1em;
  color: #f33;
  font-weight: 700;
}

.clock-container {
  margin-bottom: 1.8rem;
}

.digital-clock {
  font-size: 4rem;
  font-family: 'Courier New', Courier, monospace;
  letter-spacing: 0.18em;
  color: var(--clock-color);
  background: var(--clock-bg);
  padding: 0.4em 1.4em;
  border-radius: 0.6em;
  box-shadow: 0 0 40px var(--clock-shadow);
  margin-bottom: 0.5rem;
  text-shadow: 0 0 10px #f00, 0 0 20px #800;
  user-select: none;
}

.digital-date {
  font-size: 1.2rem;
  color: var(--secondary);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 8px #f88, 0 0 18px #8004;
}

.controls {
  margin-top: 1.2rem;
}

label {
  font-size: 1rem;
  margin-right: 0.7em;
  color: var(--label);
}

select {
  padding: 0.4em 1.2em;
  border-radius: 0.5em;
  border: none;
  background: var(--select-bg);
  color: var(--select-color);  font-size: 1rem;
  font-family: 'Courier New', Courier, monospace;
  outline: none;
  box-shadow: 0 0 10px #4002;
  margin-top: 0.3em;
}

@media (max-width: 600px) {
  .container {
    padding: 1.3rem 0.5rem 1.5rem 0.5rem;
  }
  .digital-clock {
    font-size: 2.1rem;
    padding: 0.3em 0.7em;
  }
  .digital-date {
    font-size: 0.96rem;
  }
  select {
    font-size: 0.96rem;
    padding: 0.4em 0.5em;
  }
}
.toggle-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1em;
  gap: 0.7em;
}

.switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 24px;
}

.switch input {display:none;}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #330000;
  border-radius: 24px;
  box-shadow: 0 0 8px #a00a;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background-color: #f22;
  border-radius: 50%;
  box-shadow: 0 0 4px #f44;
  transition: .4s;
}

input:checked + .slider {
  background-color: #222;
}

input:checked + .slider:before {
  transform: translateX(22px);
}
#hour-label {
  color: #faa;
  font-family: 'Courier New', Courier, monospace;
  letter-spacing: 0.04em;
  font-size: 1.1em;
}
select, #theme-select {
  min-height: 2.2em;
  border-radius: 0.7em;
  padding: 0.4em 0.9em;
}
.switch .slider {
  min-height: 24px;
  min-width: 46px;
}