/* ============================================================
   COMPONENTS.CSS — Reusable UI components
   ============================================================ */

/* ── FAB Group (theme toggle + back-to-top) ── */
.fab-group {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    z-index: 1200;
}

.theme-toggle {
    width: 46px;
    height: 46px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    flex-shrink: 0;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform 0.4s ease;
}

.theme-toggle:hover svg {
    transform: rotate(20deg);
}

.back-to-top {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px) scale(0.85);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, box-shadow 0.25s ease;
    box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35);
    flex-shrink: 0;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top:hover {
    transform: translateY(-2px) scale(1.08);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.5);
}

@media (max-width: 768px) {
    .fab-group { bottom: 1.5rem; right: 1.25rem; gap: 0.5rem; }
    .theme-toggle, .back-to-top { width: 42px; height: 42px; }
}

@media (max-width: 480px) {
    .fab-group { bottom: 1rem; right: 1rem; }
    .theme-toggle, .back-to-top { width: 38px; height: 38px; }
    .theme-toggle svg { width: 17px; height: 17px; }
}

/* ── Navbar ── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--container-padding);
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-xl);
    transition: all var(--transition-base);
    letter-spacing: -0.025em;
}

.nav-logo:hover {
    color: var(--accent-primary);
    transform: translateY(-1px);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
    color: var(--accent-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link:focus::after,
.nav-link.active::after {
    width: 100%;
}

.resume-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 12px;
    font-weight: 500;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.2);
    transition: all 0.3s ease;
    border: none;
    letter-spacing: 0.025em;
}

.resume-btn:hover {
    filter: brightness(1.1);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.35);
}

.resume-btn::after {
    display: none;
}

/* ── Modal ── */
.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active { opacity: 1; visibility: visible; }

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.active .modal-content { transform: scale(1); }

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 1;
}

.modal-close:hover { background: var(--error); color: white; border-color: var(--error); }
.modal-body { padding: var(--space-3xl); }

@media (max-width: 480px) {
    .modal-content { max-width: 95vw; margin: 1rem; }
    .modal-body { padding: var(--space-xl); }
}

/* ── Ripple effect ── */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}