/* ============================================
   COMPONENT STYLES
   Reusable UI Components
   ============================================ */

/* ==================
   BUTTONS
   ================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    text-align: center;
    text-decoration: none;
    border: var(--border-width) solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    min-height: 44px;
    /* Touch-friendly */
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

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

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

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

.btn--secondary:hover {
    background-color: var(--color-charcoal);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn--accent {
    background-color: var(--color-terracotta);
    color: var(--color-white);
    border-color: var(--color-terracotta);
}

.btn--accent:hover {
    background-color: var(--color-stone);
    border-color: var(--color-stone);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--large {
    padding: 1.125rem 2.5rem;
    font-size: var(--text-lg);
}

.btn--small {
    padding: 0.625rem 1.5rem;
    font-size: var(--text-sm);
}

/* ==================
   CARDS
   ================== */

.card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

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

.card__image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card:hover .card__image {
    transform: scale(1.05);
}

.card__content {
    padding: var(--space-md);
}

.card__title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-xs);
    color: var(--color-charcoal);
}

.card__subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-xs);
}

.card__description {
    font-size: var(--text-base);
    color: var(--color-text-primary);
    line-height: var(--leading-relaxed);
}

/* Project Card Specific */
.card--project {
    position: relative;
    cursor: pointer;
}

.card--project .card__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-overlay);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    padding: var(--space-md);
    text-align: center;
}

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

.card--project .card__overlay-title {
    color: var(--color-white);
    font-size: var(--text-2xl);
    margin-bottom: var(--space-xs);
}

.card--project .card__overlay-meta {
    color: var(--color-sand);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

/* ==================
   NAVIGATION
   ================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background-color: transparent;
    transition: all var(--transition-base);
    padding: var(--space-md) 0;
}

.nav.scrolled {
    background-color: rgba(254, 253, 251, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
}

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

.nav__logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: var(--weight-semibold);
    color: var(--color-charcoal);
    text-decoration: none;
    letter-spacing: var(--tracking-tight);
}

.nav__menu {
    display: none;
    gap: var(--space-md);
    list-style: none;
}

@media (min-width: 768px) {
    .nav__menu {
        display: flex;
    }
}

.nav__link {
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    color: var(--color-charcoal);
    text-decoration: none;
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__link:hover {
    color: var(--color-accent);
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background-color: var(--color-sand);
    border-radius: var(--radius-full);
    padding: 0.25rem;
}

.lang-switcher__btn {
    padding: 0.375rem 0.75rem;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-charcoal);
    background-color: transparent;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-switcher__btn.active {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.lang-switcher__btn:hover:not(.active) {
    color: var(--color-accent);
}

/* Mobile Menu Toggle */
.nav__toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

@media (min-width: 768px) {
    .nav__toggle {
        display: none;
    }
}

.nav__toggle-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    transition: all var(--transition-base);
}

.nav__toggle.active .nav__toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active .nav__toggle-line:nth-child(2) {
    opacity: 0;
}

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

/* Mobile Menu */
.nav__mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-white);
    box-shadow: var(--shadow-xl);
    padding: var(--space-xl) var(--space-md);
    transition: right var(--transition-base);
    z-index: var(--z-modal);
}

.nav__mobile.active {
    right: 0;
}

.nav__mobile-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.nav__mobile-link {
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    color: var(--color-charcoal);
    text-decoration: none;
}

/* ==================
   FORMS
   ================== */

.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-charcoal);
    background-color: var(--color-white);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(201, 168, 138, 0.1);
}

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

.form-error {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-error);
    margin-top: var(--space-xs);
}

.form-success {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-success);
    margin-top: var(--space-xs);
}

/* ==================
   MODAL
   ================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.modal.active {
    display: flex;
}

.modal__backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-overlay);
    backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: fadeIn var(--transition-base);
}

.modal__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    z-index: 1;
}

.modal__close:hover {
    background-color: var(--color-sand);
    transform: rotate(90deg);
}

/* ==================
   FOOTER
   ================== */

.footer {
    background-color: var(--color-charcoal);
    color: var(--color-sand);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer__content {
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

@media (min-width: 768px) {
    .footer__content {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer__section-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.footer__link {
    color: var(--color-sand);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: block;
    margin-bottom: var(--space-xs);
}

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

.footer__social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-stone);
    border-radius: var(--radius-full);
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--color-terracotta);
    transform: translateY(-2px);
}

.footer__bottom {
    border-top: 1px solid var(--color-stone);
    padding-top: var(--space-md);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-stone);
}