/* ========================================
   Button System - Flightdemy
   ======================================== */

/* Base Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    line-height: 1;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ========================================
   Button Variants
   ======================================== */

/* Primary - Green background, white text */
.btn-primary {
    background: var(--color-fd-green-4);
    color: white;
    border-color: var(--color-fd-green-4);
}

.btn-primary:hover {
    background: var(--color-fd-green-5);
    border-color: var(--color-fd-green-5);
    color: white;
}

/* Secondary - Dark blue background, white text */
.btn-secondary {
    background: var(--color-fd-blue-3);
    color: white;
    border-color: var(--color-fd-blue-3);
}

.btn-secondary:hover {
    background: var(--color-fd-blue-4);
    border-color: var(--color-fd-blue-4);
    color: white;
}

/* Soft - Light green background, dark green text */
.btn-soft {
    background: rgba(181, 214, 65, 0.15);
    color: var(--color-fd-green-5);
    border-color: transparent;
}

.btn-soft:hover {
    background: rgba(181, 214, 65, 0.25);
    color: var(--color-fd-green-5);
}

/* Outline - Green border, transparent background */
.btn-outline {
    background: transparent;
    color: var(--color-fd-green-4);
    border-color: var(--color-fd-green-4);
}

.btn-outline:hover {
    background: var(--color-fd-green-4);
    color: white;
}

/* Ghost - Just text, no border */
.btn-ghost {
    background: transparent;
    color: var(--color-fd-green-4);
    border-color: transparent;
}

.btn-ghost:hover {
    background: rgba(181, 214, 65, 0.1);
    color: var(--color-fd-green-5);
    box-shadow: none;
}

/* Danger - Red for destructive actions */
.btn-danger {
    background: var(--color-error-2);
    color: white;
    border-color: var(--color-error-2);
}

.btn-danger:hover {
    background: #c0392b;
    border-color: #c0392b;
    color: white;
}

/* ========================================
   Button Sizes
   ======================================== */

/* Small */
.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 6px;
}

/* Medium (default) */
.btn-md {
    padding: 12px 24px;
    font-size: 14px;
}

/* Large */
.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: 10px;
}

/* ========================================
   Button Modifiers
   ======================================== */

/* Full width */
.btn-block {
    width: 100%;
}

/* Icon only (square) */
.btn-icon {
    padding: 12px;
    aspect-ratio: 1;
}

.btn-icon.btn-sm {
    padding: 8px;
}

.btn-icon.btn-lg {
    padding: 16px;
}

/* Button Loading State */
#loadingBtn {
    width: 18px;
    height: 18px;
    margin-left: 8px;
    flex-shrink: 0;
}