/*
 * Components CSS
 */

/* Button Base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    transition: all var(--duration-fast) var(--easing-default);
    text-decoration: none;
}

/* Button Primary */
.btn-primary {
    background-color: var(--accent);
    color: var(--on-accent);
    border-radius: var(--rounded-md);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.15); /* glow-accent */
    outline: none;
}

/* Button Secondary */
.btn-secondary {
    background-color: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: var(--rounded-md);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
}
.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--accent-subtle);
    outline: none;
}

/* Card & All Other Page Cards */
.card, .service-card, .portfolio-card, .project-card, .comp-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--rounded-lg);
    padding: var(--space-lg);
    transition: all var(--duration-base) var(--easing-default);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}
.card::before, .service-card::before, .portfolio-card::before, .project-card::before, .comp-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(600px circle at var(--mouse-x, -9999px) var(--mouse-y, -9999px), rgba(var(--accent-rgb), 0.15), transparent 40%);
    opacity: 0;
    transition: opacity var(--duration-base);
    pointer-events: none;
    z-index: 0;
}
.card:hover::before, .service-card:hover::before, .portfolio-card:hover::before, .project-card:hover::before, .comp-card:hover::before {
    opacity: 1;
}
.card > *, .service-card > *, .portfolio-card > *, .project-card > *, .comp-card > * {
    position: relative;
    z-index: 1;
}
.card:hover, .service-card:hover, .portfolio-card:hover, .project-card:hover, .comp-card:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--accent);
    box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.15); /* glow-accent */
}

/* Tag */
.tag {
    display: inline-flex;
    background-color: var(--accent-subtle);
    color: var(--accent);
    border-radius: var(--rounded-full);
    padding: 4px 12px;
    font-size: 0.875rem; /* caption fontSize */
    font-weight: 500;
}

/* Input */
.input {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    width: 100%;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--duration-fast), box-shadow var(--duration-fast), transform var(--duration-fast);
}
.input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
    transform: translateY(-1px);
}

/* Image Placeholder (SVG Fallback) */
.img-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 200px;
    background-color: var(--bg-surface);
    border: 1px dashed var(--border);
    border-radius: var(--rounded-md);
    color: var(--text-muted);
}
.img-placeholder svg {
    opacity: 0.4;
}

/* M-8: 터치 디바이스 hover 제거 */
@media (hover: none) {
    .service-card:hover,
    .project-card:hover,
    .portfolio-card:hover,
    .comp-card:hover {
        transform: none;
        box-shadow: none;
    }
    .card:hover {
        background-color: var(--bg-surface);
        border-color: var(--border);
        box-shadow: none;
    }
}

/* ─── Language Switcher ─── */
.lang-switch {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: var(--rounded-md);
    transition: color var(--duration-fast), border-color var(--duration-fast), background var(--duration-fast);
    text-decoration: none;
    line-height: 1;
}

.lang-switch:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(var(--accent-rgb, 59, 130, 246), 0.08);
}

/* ==========================================================================
   CTA Section — 공통 디자인 시스템 (Full-Width)
   ========================================================================== */
.cta-section {
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
    background: linear-gradient(
        160deg,
        rgba(var(--accent-rgb), 0.05) 0%,
        rgba(var(--gradient-end-rgb), 0.05) 50%,
        transparent 100%
    );
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

/* Ambient glow behind section */
.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 400px;
    transform: translate(-50%, -50%);
    background: radial-gradient(ellipse, rgba(var(--accent-rgb), 0.08) 0%, rgba(var(--gradient-end-rgb), 0.06) 40%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

/* Mouse-following spotlight glow */
.cta-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        600px circle at var(--mouse-x, -9999px) var(--mouse-y, -9999px),
        rgba(var(--accent-rgb), 0.10),
        rgba(var(--gradient-end-rgb), 0.05) 30%,
        transparent 60%
    );
    z-index: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.cta-section:hover::after {
    opacity: 1;
}

.cta-card {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

/* CTA icon */
.cta-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--rounded-md);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    margin-bottom: var(--space-lg);
    font-size: 1.5rem;
    color: #fff;
}
.cta-icon svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* CTA heading */
.cta-card .cta-heading {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}
.cta-card .cta-sub {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

/* Dual CTA buttons */
.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

/* Ghost / Secondary button */
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--rounded-md);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--duration-fast) var(--easing-default);
}
.btn-ghost:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.06);
    transform: translateY(-1px);
}

/* Trust micro-copy bar */
.cta-trust {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}
.cta-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.cta-trust-item::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    font-size: 0.75rem;
}

/* Process steps inline (Services CTA) */
.cta-process {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.cta-process-step {
    padding: 4px 12px;
    border-radius: var(--rounded-full);
    background: rgba(var(--accent-rgb), 0.08);
    color: var(--accent);
    font-weight: 600;
    white-space: nowrap;
}
.cta-process-arrow {
    color: var(--text-tertiary);
    font-size: 0.7rem;
}

/* CTA Section — Mobile */
@media (max-width: 767px) {
    .cta-section {
        padding-top: var(--space-3xl);
        padding-bottom: var(--space-3xl);
    }
    .cta-card .cta-heading {
        font-size: 1.4rem;
    }
    .cta-card .cta-sub {
        font-size: 0.95rem;
    }
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    .cta-actions .btn-primary,
    .cta-actions .btn-ghost {
        width: 100%;
        max-width: 280px;
    }
    .cta-trust {
        flex-direction: column;
        align-items: center;
        gap: var(--space-xs);
    }
    .cta-process {
        flex-wrap: wrap;
    }
}