/* ==============================================
   buttons.css
   All button variants for Virtual Wash.
   Depends on tokens.css.
   ============================================== */

/* -----------------------------------------------
   BASE — shared by all buttons
----------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.03em;
    border: none;
    border-radius: var(--radius-md);
    padding: 13px 28px;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* -----------------------------------------------
   PRIMARY — filled teal gradient
   Use for: Book Now, Submit, main CTAs
----------------------------------------------- */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: 0 6px 20px rgba(20, 143, 161, 0.32);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-dark) 100%);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.btn-primary:hover:not(:disabled)::before { opacity: 1; }
.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(20, 143, 161, 0.44);
}
.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Ensure text/icons sit above ::before */
.btn-primary > * { position: relative; z-index: 1; }

/* -----------------------------------------------
   SECONDARY — outlined teal
   Use for: Track Order (on light backgrounds)
----------------------------------------------- */
.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(20, 143, 161, 0.07);
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
}

/* -----------------------------------------------
   GHOST — glass style for dark backgrounds
   Use for: Track Order (on hero/dark backgrounds)
----------------------------------------------- */
.btn-ghost {
    background: rgba(255, 255, 255, 0.10);
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-ghost:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.45);
    transform: translateY(-2px);
}

/* -----------------------------------------------
   SIZES
----------------------------------------------- */
.btn-sm {
    font-size: 13px;
    padding: 9px 18px;
}

.btn-lg {
    font-size: 17px;
    padding: 16px 36px;
    border-radius: var(--radius-lg);
}

/* -----------------------------------------------
   ICON HELPERS
----------------------------------------------- */
.btn-arrow {
    transition: transform 0.22s ease;
    display: inline-flex;
    align-items: center;
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* Live ping — used on Track Order button */
.btn-ping {
    position: relative;
    width: 8px;
    height: 8px;
    flex-shrink: 0;
}

.btn-ping::before,
.btn-ping::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--color-primary-light);
}

.btn-ping::after {
    animation: btnPingRipple 2s ease-out infinite;
}

@keyframes btnPingRipple {
    0%   { transform: scale(1); opacity: 0.9; }
    100% { transform: scale(3.5); opacity: 0; }
}

/* On dark backgrounds the ping is white */
.btn-ghost .btn-ping::before,
.btn-ghost .btn-ping::after {
    background: rgba(255, 255, 255, 0.8);
}

/* Spinner — for loading states */
.btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: white;
    border-radius: 50%;
    animation: btnSpin 0.7s linear infinite;
}

@keyframes btnSpin {
    to { transform: rotate(360deg); }
}