/**
 * MAJOTUBEUNAIDEA - UI Components (Premium Edition v4.0)
 * Componentes reutilizables premium: botones, cards, badges, modal, etc.
 */

/* ============================================
   HEADER & NAVIGATION (Premium)
   ============================================ */
.header {
    position: fixed;
    inset-inline: 0;
    top: 0;
    height: calc(var(--header-height) + var(--safe-top));
    padding: var(--safe-top) 5% 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-subtle);
    z-index: var(--z-fixed);
    transition: var(--transition-normal);
}

.header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
    pointer-events: none;
}

.header.scrolled {
    height: calc(var(--header-height-scrolled) + var(--safe-top));
    background: rgba(5, 5, 8, 0.95);
    border-bottom-color: var(--border-default);
    box-shadow: var(--shadow-md);
}

.brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    text-decoration: none;
    transition: var(--transition-base);
}

.brand:hover {
    transform: translateY(-2px);
}

.brand__name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-black);
    line-height: 1;
    letter-spacing: var(--letter-spacing-tight);
    color: var(--text-primary);
}

.brand__name span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand__tagline {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-widest);
    text-transform: uppercase;
    color: var(--text-muted);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav__link {
    position: relative;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--text-secondary);
    transition: var(--transition-fast);
    padding: var(--space-2) 0;
}

.nav__link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-spring);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-spring);
}

.nav__link:hover,
.nav__link.active {
    color: var(--text-primary);
}

.nav__link:hover::before,
.nav__link.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: var(--space-2);
    cursor: pointer;
    border-radius: var(--radius-md);
    background: var(--glass-bg-light);
    border: 1px solid var(--border-subtle);
    transition: var(--transition-base);
}

.nav-toggle:hover {
    background: var(--bg-elevated);
    border-color: var(--border-default);
}

.nav-toggle__bar {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-spring);
    border-radius: 1px;
}

.nav-toggle.active .nav-toggle__bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .nav-toggle__bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   BUTTONS (Premium)
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-wide);
    border-radius: var(--radius-md);
    transition: var(--transition-spring);
    cursor: pointer;
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: var(--transition-base);
}

.btn:hover::before {
    opacity: 1;
}

.btn--primary {
    background: var(--gradient-primary);
    color: #FFFFFF;
    box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-strong);
    filter: brightness(1.1);
}

.btn--secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.btn--secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.btn--accent {
    background: var(--gradient-accent);
    color: #FFFFFF;
    box-shadow: var(--shadow-glow-accent);
}

.btn--accent:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-glow-accent), var(--shadow-lg);
}

.btn--ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

.btn--ghost:hover {
    background: var(--glass-bg-light);
    border-color: var(--border-default);
    color: var(--text-primary);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
}

.btn--xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--font-size-lg);
}

.btn--sm {
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-xs);
    min-height: 44px;
}

.btn--icon {
    padding: var(--space-3);
    aspect-ratio: 1;
}

/* ============================================
   CARDS (Premium)
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: var(--transition-spring);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-gradient);
    opacity: 0;
    transition: var(--transition-base);
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.05), transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

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

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

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

.card__image {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-5);
    transition: var(--transition-slow);
}

.card:hover .card__image {
    transform: scale(1.03);
}

.card__title {
    font-family: var(--font-family-headings);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.card__description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-4);
}

.card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* ============================================
   PROJECT CARD (Premium)
   ============================================ */
.project-card {
    display: grid;
    grid-template-rows: auto 1fr auto;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-spring);
}

.project-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 45, 85, 0.1), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow-accent);
}

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

.project-card__image-wrapper {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.project-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project-card:hover .project-card__image {
    transform: scale(1.08);
}

.project-card__category {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
}

.project-card__body {
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.project-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.project-card__description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

.project-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-surface);
}

.project-card__stats {
    display: flex;
    gap: var(--space-4);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat__label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--text-muted);
}

.stat__value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

/* ============================================
   BADGES (Premium)
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
    transition: var(--transition-fast);
}

.badge:hover {
    transform: translateY(-1px);
}

.badge--primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.badge--accent {
    background: var(--gradient-accent);
    color: var(--bg-dark);
    border-color: transparent;
    box-shadow: var(--shadow-glow-accent);
}

.badge--success {
    background: rgba(0, 214, 143, 0.15);
    color: var(--color-success);
    border-color: var(--color-success);
}

.badge--warning {
    background: rgba(255, 176, 32, 0.15);
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.badge--info {
    background: rgba(100, 210, 255, 0.15);
    color: var(--color-info);
    border-color: var(--color-info);
}

/* ============================================
   DIFFICULTY STARS (Premium)
   ============================================ */
.difficulty {
    display: flex;
    gap: var(--space-1);
}

.difficulty__star {
    width: 16px;
    height: 16px;
    fill: var(--border-strong);
    transition: var(--transition-fast);
}

.difficulty__star.active {
    fill: var(--color-accent);
    filter: drop-shadow(0 0 4px rgba(255, 45, 85, 0.4));
}

/* ============================================
   SECTION HEADERS (Premium)
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header__badge {
    margin-bottom: var(--space-4);
}

.section-header__title {
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header__description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   GRID LAYOUTS (Premium)
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--auto {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

/* ============================================
   FOOTER (Premium)
   ============================================ */
.footer {
    padding: var(--space-12) 5%;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

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

.footer__copy {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.footer__links {
    display: flex;
    gap: var(--space-6);
}

.footer__link {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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

/* ============================================
   MODAL & ZOOM SYSTEM (Premium)
   ============================================ */
.modal {
    display: none;
    position: fixed !important;
    inset: 0;
    z-index: var(--z-modal);
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    animation: fadeIn 0.2s ease-out;
    flex-direction: column;
    pointer-events: auto !important;
}

.modal.active {
    display: flex !important;
}

/* Force zoom cursor on everything zoomable */
img[data-zoomable],
.card__image,
.project-card__image,
.invento-card__image {
    cursor: zoom-in !important;
}

.modal__controls {
    position: absolute;
    top: calc(var(--space-6) + var(--safe-top));
    right: calc(5% + var(--safe-right));
    display: flex;
    align-items: center;
    gap: var(--space-3);
    z-index: 100;
    background: var(--glass-bg);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.modal__scale-indicator {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    min-width: 50px;
    text-align: center;
}

.modal__btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-spring);
}

.modal__btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.modal__btn--reset {
    font-size: var(--font-size-xs);
    width: auto;
    padding: 0 var(--space-3);
    border-radius: var(--radius-full);
}

.modal__close {
    font-size: var(--font-size-3xl);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-spring);
    line-height: 1;
    margin-left: var(--space-2);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal__close:hover {
    color: var(--color-accent);
    transform: rotate(90deg) scale(1.1);
}

.modal__content-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    width: 100%;
    height: 100%;
}

.modal__content {
    max-width: 95vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-2xl);
    transition: transform 0.1s ease-out;
    user-select: none;
    will-change: transform;
    flex-shrink: 0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .grid--3,
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 var(--space-4);
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: var(--space-5);
        background: var(--bg-surface);
        border-bottom: 1px solid var(--border-default);
        gap: var(--space-4);
    }

    .nav.active {
        display: flex;
        animation: fadeInDown 0.3s var(--transition-spring);
    }

    .nav-toggle {
        display: flex;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .grid--auto {
        grid-template-columns: 1fr;
    }

    .footer__content {
        flex-direction: column;
        gap: var(--space-5);
        text-align: center;
    }

    .section {
        padding-top: var(--space-16);
        padding-bottom: var(--space-16);
    }
}