/* Form submit button */
.content button {
  --btn-bg: var(--accent-color);

  background: var(--btn-bg);
  border: none;
  color: #ffffff;
  font-size: 1rem;
  padding: 12px 26px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 0.3px;

  position: relative;
  overflow: hidden;

  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
}

body.dark-theme .content button {
  background: var(--accent-color);
  color: #fff;
}

.content button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-color);
}

.content button:active {
  transform: translateY(1px);
  box-shadow: 0 2px 12px var(--accent-color);
}

.content button::after {
  content: "";
  position: absolute;
  top: 0;
  left: -130%;
  width: 220%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255,255,255,0.45) 50%,
    transparent 100%
  );
  transform: skewX(-20deg);
  transition: left 0.6s ease;
  pointer-events: none;
}

.content button:hover::after {
  left: 130%;
}

.go-arrow {
  display: inline-block;
  margin-left: 6px;
  transition: transform 0.25s ease;
}

.content button:hover .go-arrow {
  transform: translateX(3px);
}

.content button[type="submit"] {
  margin-top: 7px;
}

.box--main .content button[type="submit"]{
  margin-top: clamp(6px, 1.4vh, 10px);
  padding: clamp(10px, 1.7vh, 12px) clamp(20px, 3vh, 26px);
  font-size: clamp(0.92rem, 2.2vmin, 1.02rem);
}

/* Form labels */
.content label {
  display: block;
  text-align: left;
  margin: 10px auto;
  max-width: 260px;
  font-size: 0.9rem;
  color: var(--text-color);
}

.box--main .content label{
  margin: clamp(6px, 1.2vh, 10px) auto;
  max-width: min(100%, 340px);
  font-size: clamp(0.84rem, 1.8vmin, 0.95rem);
}

.content label.centered {
  text-align: center;
}

.box--main .content label.centered{
  margin-top: clamp(6px, 1.2vh, 10px);
  margin-bottom: clamp(6px, 1.2vh, 12px);
}

/* Text input and dropdown */
.content input[type="text"],
.content select {
  width: 100%;
  box-sizing: border-box;
  margin-top: 6px;
  padding: 8px 10px;

  background: var(--input-bg);
  color: var(--input-text);
  border-radius: 8px;
  border: 1px solid var(--input-border);

  font-size: 0.92rem;
  font-family: inherit;

  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

.box--main .content input[type="text"],
.box--main .content select{
  margin-top: clamp(4px, 0.8vh, 6px);
  padding: clamp(7px, 1.2vh, 10px) clamp(9px, 1.4vh, 12px);
  font-size: clamp(0.84rem, 1.9vmin, 0.95rem);
  width: 100%;
  max-width: min(100%, 340px);
}

.content input[type="text"]::placeholder {
  color: var(--input-placeholder);
}

.content input[type="text"]:focus,
.content select:focus {
  outline: none;
  border-color: var(--input-border-focus);
  box-shadow: 0 0 0 2px var(--input-shadow-focus);
}

body.dark-theme .content input[type="text"],
body.dark-theme .content select {
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.8);
}

/* Invalid YouTube URL / ID */
.content input[type="text"].input-invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.35);
}


/* Dropdown arrow */
.content select {
  -webkit-appearance: none;
  appearance: none;

  padding-right: 32px;

  background-image:
    linear-gradient(45deg, transparent 50%, var(--input-border) 50%),
    linear-gradient(-45deg, transparent 50%, var(--input-border) 50%);
  background-position:
    calc(100% - 14px) 50%,
    calc(100% - 9px)  50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.content select:focus {
  background-image:
    linear-gradient(45deg, transparent 50%, var(--input-border-focus) 50%),
    linear-gradient(-45deg, transparent 50%, var(--input-border-focus) 50%);
}

/* Checkbox */
.content input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;

  width: 16px;
  height: 16px;
  margin: 0;

  border-radius: 4px;
  border: 2px solid var(--box-border);
  background: var(--box-bg);
  cursor: pointer;

  transition:
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.content input[type="checkbox"]:hover {
  border-color: var(--accent-color);
}

.content input[type="checkbox"]:checked {
  background: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-color);
}