/* =========================================
   1. VARIABLES & RESET
   ========================================= */
:root {
    /* Colors */
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-gray-light: #F3F4F6;
    --color-gray-medium: #9CA3AF;
    --color-gray-dark: #4B5563;

    /* Typography */
    --font-primary: 'Inter', sans-serif;

    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    /* Transitions */
    --transition-fast: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
}

.body--modal-open {
    overflow: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* =========================================
   2. UTILITIES & COMPONENTS
   ========================================= */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
    scroll-margin-top: 100px;
}

.text-center {
    text-align: center;
}

.text-white {
    color: var(--color-white);
}

.text-gray {
    color: var(--color-gray-medium);
}

.bg-light {
    background-color: var(--color-gray-light);
}

.bg-black {
    background-color: var(--color-black);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn--primary {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.btn--primary:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-black);
    border-color: var(--color-black);
}

.btn--secondary:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn--full {
    width: 100%;
    text-align: center;
}

.btn:focus-visible,
.filter-btn:focus-visible,
.hamburger-btn:focus-visible,
.mobile-menu__close:focus-visible,
.carousel__btn:focus-visible,
.modal__close:focus-visible {
    outline: 2px solid var(--color-black);
    outline-offset: 3px;
}

/* Placeholders (Gray Boxes) */
.placeholder-box {
    background-color: #D1D5DB;
    width: 100%;
    height: 100%;
    min-height: 200px;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-100 {
    transition-delay: 0.1s;
}

.delay-200 {
    transition-delay: 0.2s;
}

/* =========================================
   3. HEADER
   ========================================= */
.header {
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 100;
    backdrop-filter: blur(5px);
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    z-index: 101;
    display: flex;
    align-items: center;
}

.header__logo img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

/* Desktop Nav (Hidden on Mobile) */
.header__nav {
    display: none;
}

.header__cta {
    display: none;
}

/* Hamburger Button (Visible on Mobile) */
.hamburger-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-white);
    z-index: 200;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);

    /* Animation State: Hidden */
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.mobile-menu__container {
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.mobile-menu__close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2.5rem;
    cursor: pointer;
    color: var(--color-black);
}

.mobile-menu__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.mobile-menu__link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-black);
    position: relative;
    display: inline-block;
}

.mobile-menu__link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: width 0.3s ease-out;
}

.mobile-menu__link:hover::after {
    width: 100%;
}

.mobile-menu__cta {
    display: block;
}

/* Desktop Styles (min-width: 768px) */
@media (min-width: 768px) {
    .header__container {
        position: relative;
    }

    .header__nav {
        display: block;
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }

    .header__cta {
        display: inline-block;
    }

    .hamburger-btn {
        display: none;
    }

    .mobile-menu {
        display: none;
    }

    .header__menu {
        display: flex;
        gap: var(--spacing-lg);
    }

    .header__link {
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--color-gray-dark);
        position: relative;
        display: inline-block;
    }

    .header__link::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 0;
        height: 2px;
        background-color: var(--color-black);
        transition: width 0.3s ease-out;
    }

    .header__link:hover {
        color: var(--color-black);
    }

    .header__link:hover::after {
        width: 100%;
    }
}

/* =========================================
   4. HERO SECTION
   ========================================= */
.hero__container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: 1rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.hero__actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.placeholder-box--hero {
    min-height: 400px;
}

@media (min-width: 992px) {
    .hero__container {
        grid-template-columns: 1fr 1fr;
    }

    .hero__title {
        font-size: 3.5rem;
    }
}

/* =========================================
   5. SKILLS SECTION
   ========================================= */
.skills__container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.section__title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section__description {
    color: var(--color-gray-dark);
    max-width: 600px;
}

.skills__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.skills__items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skill-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.skill-icon {
    font-size: 1.2rem;
}

@media (min-width: 992px) {
    .skills__container {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

/* =========================================
   6. STACK SECTION
   ========================================= */
.stack__header {
    margin-bottom: var(--spacing-xl);
}

.stack .section__description {
    max-width: 100%;
    font-size: 1.05rem;
    line-height: 1.8;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.stack__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stack-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid #E5E7EB;
    transition: transform var(--transition-fast);
}

.stack-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.stack-item img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}

.stack-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 640px) {
    .stack__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .stack__grid {
        grid-template-columns: repeat(8, 1fr);
    }
}

/* =========================================
   7. PORTFOLIO SECTION (MASONRY)
   ========================================= */
.portfolio__header {
    margin-bottom: var(--spacing-xl);
}

.portfolio__header .section__description {
    margin: 0 auto;
}

.portfolio__filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.filter-btn {
    background: none;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-gray-medium);
    cursor: pointer;
    padding-bottom: 2px;
    position: relative;
    transition: all var(--transition-fast);
}

.filter-btn::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: width 0.3s ease-out;
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--color-black);
}

.filter-btn:hover::after,
.filter-btn.active::after {
    width: 100%;
}

/* Grid Layout */
.portfolio__grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
    grid-auto-rows: 250px;
    grid-auto-flow: dense;
}

.project-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background-color: #E5E5E5;
    transition: transform var(--transition-fast);
}

.project-card:hover {
    transform: scale(1.02);
}

.project-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-card__info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--color-white);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-fast);
}

.project-card:hover .project-card__info {
    opacity: 1;
    transform: translateY(0);
}

.project-card.hidden {
    display: none;
}

/* Responsive Grid Logic */
@media (min-width: 641px) {
    .portfolio__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-card.project-card--tall {
        grid-row: span 2;
    }
}

@media (min-width: 1025px) {
    .portfolio__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .project-card.project-card--tall {
        grid-row: span 2;
    }

    .project-card.project-card--wide {
        grid-column: span 2;
    }
}

/* =========================================
   8. CONTACT SECTION
   ========================================= */
.contact__container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.9rem;
    font-weight: 500;
}

.form-input {
    padding: 1rem;
    background-color: #1F2937;
    border: 1px solid #374151;
    color: var(--color-white);
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    border-color: var(--color-white);
}

.contact__honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

.contact__status {
    min-height: 1.5rem;
    font-size: 0.95rem;
}

.contact__status--success {
    color: #C7F9CC;
}

.contact__status--error {
    color: #FFB4A2;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 0.8rem;
}

/* Contact Section - Better Contrast */
.contact .section__description {
    color: var(--color-white) !important;
}

.contact .btn--primary {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.contact .btn--primary:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
}

@media (min-width: 992px) {
    .contact__container {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

/* =========================================
   9. FOOTER
   ========================================= */
.footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid #E5E7EB;
}

.footer__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer__links {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-gray-dark);
}

@media (min-width: 768px) {
    .footer__container {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* =========================================
   10. MODAL
   ========================================= */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    overflow-y: auto;
    padding: var(--spacing-lg) 0;
}

.modal.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal__content {
    position: relative;
    background-color: var(--color-white);
    width: 90%;
    max-width: 1200px;
    z-index: 1001;
    margin: auto;
}

.modal__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-black);
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.modal__close:hover {
    transform: scale(1.1);
}

.modal__body {
    display: flex;
    flex-direction: column;
}

.modal__image-wrapper {
    width: 100%;
    flex-shrink: 0;
}

.modal__image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.modal__details {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.modal__title {
    font-size: 1.75rem;
    font-weight: 700;
}

.modal__description {
    color: var(--color-gray-dark);
    line-height: 1.6;
}

.modal__subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
}

.modal__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.modal__tags li {
    background-color: var(--color-gray-light);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

@media (min-width: 992px) {
    .modal__body {
        flex-direction: row;
    }

    .modal__image-wrapper {
        width: 66.666%;
        max-height: 80vh;
        overflow: hidden;
    }

    .modal__image {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .modal__details {
        width: 33.333%;
        overflow-y: auto;
        max-height: 80vh;
    }
}

.modal.hidden {
    display: none;
}

/* =========================================
   11. MODAL MEDIA TYPES
   ========================================= */

/* Contenedores de media - Ocultos por defecto */
.modal__media {
    display: none;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
}

.modal__media.active {
    display: flex;
}

/* ========== 1. IMAGEN SIMPLE 16:9 ========== */
.modal__media--image {
    background-color: #f5f5f5;
}

.modal__media--image .modal__image {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

/* ========== 2. CARRUSEL ========== */
.modal__media--carousel {
    background-color: #f5f5f5;
}

.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background-color: #e5e5e5;
}

.carousel__track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    height: 100%;
}

.carousel__slide {
    min-width: 100%;
    flex-shrink: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel__slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.carousel__btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.95);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.carousel__btn:hover {
    background-color: rgba(255, 255, 255, 1);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.carousel__btn:active {
    transform: translateY(-50%) scale(0.95);
}

.carousel__btn--prev {
    left: 1rem;
}

.carousel__btn--next {
    right: 1rem;
}

.carousel__btn svg {
    width: 24px;
    height: 24px;
    color: var(--color-black);
}

/* ========== 3. VIDEO VERTICAL 9:16 ========== */
.modal__media--video {
    background-color: #000000;
    padding: var(--spacing-md);
}

.modal__video {
    width: auto;
    height: 100%;
    max-height: 70vh;
    max-width: 100%;
    aspect-ratio: 9 / 16;
    object-fit: contain;
    display: block;
}

/* ========== 4. VIDEO HORIZONTAL 16:9 ========== */
.modal__media--video-horizontal {
    background-color: #000000;
}

.modal__video-horizontal {
    width: 100%;
    height: auto;
    max-height: 70vh;
    aspect-ratio: 16 / 9;
    object-fit: contain;
    display: block;
}

/* ========== 5. IMAGEN CUADRADA 500x500 ========== */
.modal__media--square {
    background-color: #f5f5f5;
    padding: var(--spacing-lg) 0;
}

.modal__image-square {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
    margin: 0;
}

/* Responsividad para Media Types */
@media (max-width: 991px) {
    .modal__video {
        max-height: 60vh;
    }

    .modal__video-horizontal {
        max-height: 60vh;
    }

    .modal__image-square {
        max-width: 100%;
    }

    .carousel__btn {
        width: 35px;
        height: 35px;
    }

    .carousel__btn svg {
        width: 18px;
        height: 18px;
    }

    .carousel__btn--prev {
        left: 0.5rem;
    }

    .carousel__btn--next {
        right: 0.5rem;
    }
}

@media (max-width: 640px) {
    .modal__media--video {
        padding: 0;
    }

    .modal__media--square {
        padding: var(--spacing-md) 0;
    }

    .modal__video {
        max-height: 50vh;
    }

    .modal__video-horizontal {
        max-height: 40vh;
    }
}