/* ═══════════════════════════════════════════════════════════════════════
   OAK STUDIO — Components
   Buttons, Cards, Forms, Badges
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    text-decoration: none;
    border: none;
    outline: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    transition: left 0.6s var(--ease-out);
}

.btn:hover::before {
    left: 100%;
}

.btn i {
    font-size: 0.85em;
    transition: transform var(--dur-normal) var(--ease-out);
}

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

/* Primary Button */
.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

/* Secondary/Outline Button */
.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(var(--color-white-rgb), 0.2);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
    transform: translateY(-2px);
}

/* White Button */
.btn-white {
    background: #ffffff;
    color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
    background: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 255, 255, 0.25);
}

/* Outline White Button */
.btn-outline-white {
    background: transparent;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
    border-color: #ffffff;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--color-white);
    padding: 0.5rem 0;
    border-radius: 0;
}

.btn-ghost::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--dur-normal) var(--ease-out);
}

.btn-ghost:hover::after {
    width: 100%;
}

.btn-ghost:hover {
    color: var(--color-primary);
}

.btn-ghost::before {
    display: none;
}

/* Button Sizes */
.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--fs-xs);
}

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: var(--fs-body);
}

/* Arrow Link */
.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--color-white);
    transition: var(--transition-base);
    text-decoration: none;
}

.arrow-link i,
.arrow-link .arrow {
    transition: transform var(--dur-normal) var(--ease-out);
    font-size: 0.85em;
}

.arrow-link:hover {
    color: var(--color-primary);
}

.arrow-link:hover i,
.arrow-link:hover .arrow {
    transform: translateX(6px);
}

/* ── Cards ───────────────────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Glass Card */
.card-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
}

.card-glass:hover {
    border-color: rgba(var(--color-primary-rgb), 0.2);
    background: rgba(17, 17, 17, 0.8);
}

/* Card Glow Effect */
.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
            rgba(var(--color-primary-rgb), 0.06) 0%,
            transparent 60%);
    opacity: 0;
    transition: opacity var(--dur-normal) var(--ease-out);
    pointer-events: none;
}

.card:hover::after {
    opacity: 1;
}

/* Card Icon */
.card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
    font-size: 1.375rem;
    margin-bottom: var(--space-lg);
    transition: var(--transition-base);
}

.card:hover .card__icon {
    background: rgba(var(--color-primary-rgb), 0.2);
    box-shadow: var(--shadow-glow-sm);
}

.card__title {
    font-size: var(--fs-h5);
    font-weight: var(--fw-semibold);
    margin-bottom: var(--space-sm);
    color: var(--color-white);
}

.card__text {
    font-size: var(--fs-small);
    color: var(--color-gray-200);
    line-height: var(--lh-body);
}

/* ── Form Inputs ─────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: var(--fs-small);
    font-weight: var(--fw-medium);
    color: var(--color-gray-100);
    margin-bottom: var(--space-xs);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-white);
    font-size: var(--fs-body);
    transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* ── Badge / Tag ─────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    letter-spacing: var(--ls-wide);
    border-radius: var(--radius-pill);
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

/* ── Stat Counter ────────────────────────────────────────────────────── */
.stat {
    text-align: center;
}

.stat__number {
    font-family: var(--font-heading);
    font-size: var(--fs-h1);
    font-weight: var(--fw-bold);
    color: var(--color-white);
    line-height: 1;
    letter-spacing: var(--ls-tight);
}

.stat__label {
    font-size: var(--fs-small);
    color: var(--color-gray-200);
    margin-top: var(--space-xs);
}

/* ── Tooltip ─────────────────────────────────────────────────────────── */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: 0.5rem 0.875rem;
    background: var(--color-gray-500);
    color: var(--color-white);
    font-size: var(--fs-xs);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-fast) var(--ease-out);
}

[data-tooltip]:hover::after {
    opacity: 1;
}