:root {
    --white-bg: #ffffff;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --green-clear: #16a34a;
    --red-alert: #e11d48;
    --border-light: #e2e8f0;
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --font-display: 'Outfit', sans-serif;
    --blue-accent: #3b82f6;
    --purple-accent: #8b5cf6;
    --amber-accent: #f59e0b;
    --teal-accent: #14b8a6;
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --card-bg: #ffffff;
    --nav-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.92);
    --hover-bg: #f0f0f0;
    --toggle-bg: #e0e0e0;
}

body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-dark: #e2e8f0;
    --text-muted: #94a3b8;
    --border-light: #334155;
    --card-bg: #1e293b;
    --nav-bg: #1e293b;
    --header-bg: rgba(15, 23, 42, 0.95);
    --hover-bg: #334155;
    --toggle-bg: #475569;
    --white-bg: #1e293b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-dark);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

header {
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 6%;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 2000;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-left {
    display: flex;
    align-items: center;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
}

.header-logo {
    width: 65px;
    height: 65px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--border-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    background-color: #f1f5f9;
}

.logo-text-stack {
    display: flex;
    flex-direction: column;
    line-height: 0.85;
}

.brand-main-title {
    font-size: 2.2rem;
    font-weight: 900;
    font-style: italic;
    letter-spacing: -1px;
    font-family: var(--font-display);
}

.brand-sub-title {
    font-size: 0.9rem;
    font-weight: 800;
    font-style: italic;
    letter-spacing: 0.3px;
    margin-top: 2px;
    padding-left: 28px;
    color: var(--text-dark);
}

.shiny-text-effect {
    background: linear-gradient(120deg, var(--text-dark) 40%, #94a3b8 50%, var(--text-dark) 60%);
    background-size: 300% 100%;
    background-position: -100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: titleShineClean 8s linear infinite;
}

@keyframes titleShineClean {
    0% { background-position: -100% 0; }
    30% { background-position: 200% 0; }
    100% { background-position: 200% 0; }
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.social-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.social-btn-expanded {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: 42px;
    height: 42px;
    border-radius: 50px;
    text-decoration: none;
    overflow: hidden;
    position: relative;
    transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
    animation: float-passive 3.5s infinite ease-in-out;
}

.social-btn-expanded.ig { animation-delay: 0.2s; }
.social-btn-expanded.medical-btn { animation-delay: 0.4s; }

.social-btn-expanded.fb { background: #1877f2; box-shadow: 0 4px 10px rgba(24, 119, 242, 0.25); }
.social-btn-expanded.ig { background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); box-shadow: 0 4px 10px rgba(220, 39, 67, 0.25); }
.social-btn-expanded.medical-btn { background: #e11d48; box-shadow: 0 4px 10px rgba(225, 29, 72, 0.25); }

.icon-circle {
    min-width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #ffffff;
    z-index: 2;
    border-radius: 50%;
    flex-shrink: 0;
    order: 2;
}

.social-text-clear {
    font-family: var(--font-display);
    font-weight: 700;
    font-style: italic;
    color: #ffffff;
    font-size: 0.9rem;
    white-space: nowrap;
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
    order: 1;
    padding-right: 6px;
}

.social-group a:hover { animation-play-state: paused; }
.social-btn-expanded.fb:hover { width: 145px; box-shadow: 0 0 22px rgba(24, 119, 242, 0.7); }
.social-btn-expanded.ig:hover { width: 150px; box-shadow: 0 0 22px rgba(220, 39, 67, 0.7); }
.social-btn-expanded.medical-btn:hover { width: 195px; box-shadow: 0 0 22px rgba(225, 29, 72, 0.7); }

.social-btn-expanded:hover .social-text-clear { opacity: 1; max-width: 160px; }

@keyframes float-passive {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0px); }
}

.hamburger-menu {
    display: none;
    cursor: pointer;
    z-index: 1001;
    padding: 10px;
}

.hamburger-icon {
    width: 30px;
    height: 22px;
    position: relative;
}

.hamburger-icon span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger-icon span:nth-child(1) { top: 0; }
.hamburger-icon span:nth-child(2) { top: 9px; }
.hamburger-icon span:nth-child(3) { top: 18px; }

.hamburger-menu.active .hamburger-icon span:nth-child(1) {
    transform: rotate(45deg);
    top: 9px;
}

.hamburger-menu.active .hamburger-icon span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active .hamburger-icon span:nth-child(3) {
    transform: rotate(-45deg);
    top: 9px;
}

.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.nav-overlay.active {
    display: block;
}

.mobile-social-menu {
    display: none;
}

.mobile-theme-toggle {
    display: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-item-text-only {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    font-style: italic;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), color 0.25s ease;
    position: relative;
}

.nav-item-text-only::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-clear);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-item-text-only:hover {
    color: var(--green-clear);
    transform: translateY(-2px);
}

.nav-item-text-only:hover::after {
    width: 100%;
}

.nav-item-text-only.active {
    color: var(--green-clear);
}

.nav-item-text-only.active::after {
    width: 100%;
}

.theme-toggle-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle-btn {
    background: var(--toggle-bg);
    border: none;
    width: 48px;
    height: 24px;
    border-radius: 12px;
    cursor: pointer;
    position: relative;
    transition: background 0.3s;
    padding: 0;
}

.theme-toggle-btn::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffd700;
    transition: all 0.3s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

body.dark-mode .theme-toggle-btn::after {
    left: 26px;
    background: #c0c0c0;
}

.theme-icon {
    font-size: 16px;
}

.theme-icon.sun { color: #ffd700; }
.theme-icon.moon { color: #6b6b8a; }

.proyectos-section {
    padding-top: 140px;
    padding-bottom: 60px;
    min-height: 100vh;
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease;
}

.proyectos-container {
    width: 88%;
    max-width: 1400px;
    margin: 0 auto;
}

.proyectos-header {
    margin-bottom: 30px;
}

.proyectos-title {
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 900;
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
    border-left: 4px solid var(--green-clear);
    padding-left: 18px;
}

.proyectos-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-left: 22px;
}

.contador-proyectos {
    background: rgba(22, 163, 74, 0.08);
    border: 1px solid rgba(22, 163, 74, 0.2);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--green-clear);
}

.filtros-categoria {
    display: flex;
    gap: 10px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}

.btn-filtro {
    padding: 10px 22px;
    border-radius: 25px;
    border: 2px solid var(--border-light);
    background: var(--card-bg);
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-main);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 7px;
}

.btn-filtro i {
    font-size: 0.85rem;
}

.btn-filtro:hover {
    border-color: var(--green-clear);
    color: var(--green-clear);
    background: rgba(22, 163, 74, 0.04);
}

.btn-filtro.active {
    background: var(--green-clear);
    border-color: var(--green-clear);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(22, 163, 74, 0.3);
}

.search-wrapper {
    margin-bottom: 28px;
    max-width: 450px;
}

.search-inner {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: 50px;
    padding: 4px 4px 4px 18px;
    transition: all 0.3s ease;
}

.search-inner:focus-within {
    border-color: var(--green-clear);
    box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.06);
}

.search-inner i {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.search-inner input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-dark);
    outline: none;
    padding: 11px 12px;
    font-weight: 500;
    font-size: 0.88rem;
    font-family: var(--font-main);
}

.search-inner input::placeholder {
    color: #94a3b8;
}

.search-clear {
    background: transparent;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.search-clear:hover {
    background: var(--hover-bg);
    color: var(--text-dark);
}

.grid-proyectos {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 22px;
    margin-bottom: 40px;
}

.card-proyecto {
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.card-proyecto::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.card-proyecto:nth-child(4n+1)::before { background: linear-gradient(90deg, var(--green-clear), #22c55e); }
.card-proyecto:nth-child(4n+2)::before { background: linear-gradient(90deg, var(--blue-accent), #60a5fa); }
.card-proyecto:nth-child(4n+3)::before { background: linear-gradient(90deg, var(--purple-accent), #a78bfa); }
.card-proyecto:nth-child(4n+4)::before { background: linear-gradient(90deg, var(--amber-accent), #fbbf24); }

.card-proyecto:hover::before {
    transform: scaleX(1);
}

.card-proyecto:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.08);
    border-color: transparent;
}

.card-proyecto .icono-proyecto {
    font-size: 2.2rem;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.card-proyecto:nth-child(4n+1) .icono-proyecto { color: var(--green-clear); }
.card-proyecto:nth-child(4n+2) .icono-proyecto { color: var(--blue-accent); }
.card-proyecto:nth-child(4n+3) .icono-proyecto { color: var(--purple-accent); }
.card-proyecto:nth-child(4n+4) .icono-proyecto { color: var(--amber-accent); }

.card-proyecto:hover .icono-proyecto {
    transform: scale(1.12);
}

.categoria-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 10px;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.card-proyecto:nth-child(4n+1) .categoria-badge { background: rgba(22, 163, 74, 0.08); color: var(--green-clear); border: 1px solid rgba(22, 163, 74, 0.15); }
.card-proyecto:nth-child(4n+2) .categoria-badge { background: rgba(59, 130, 246, 0.08); color: var(--blue-accent); border: 1px solid rgba(59, 130, 246, 0.15); }
.card-proyecto:nth-child(4n+3) .categoria-badge { background: rgba(139, 92, 246, 0.08); color: var(--purple-accent); border: 1px solid rgba(139, 92, 246, 0.15); }
.card-proyecto:nth-child(4n+4) .categoria-badge { background: rgba(245, 158, 11, 0.08); color: var(--amber-accent); border: 1px solid rgba(245, 158, 11, 0.15); }

.card-proyecto h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.4;
}

.card-proyecto .descripcion-corta {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 18px;
    line-height: 1.6;
    flex-grow: 1;
}

.btn-explorar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: 12px;
    text-decoration: none;
    color: #ffffff;
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    cursor: pointer;
    font-family: var(--font-display);
    transition: all 0.3s ease;
}

.card-proyecto:nth-child(4n+1) .btn-explorar { background: var(--green-clear); }
.card-proyecto:nth-child(4n+2) .btn-explorar { background: var(--blue-accent); }
.card-proyecto:nth-child(4n+3) .btn-explorar { background: var(--purple-accent); }
.card-proyecto:nth-child(4n+4) .btn-explorar { background: var(--amber-accent); }

.btn-explorar:hover {
    transform: scale(1.03);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-explorar i {
    transition: transform 0.3s;
}

.btn-explorar:hover i {
    transform: translateX(4px);
}

.empty-state {
    text-align: center;
    padding: 70px 20px;
    grid-column: 1 / -1;
}

.empty-state .icono-vacio {
    font-size: 3.5rem;
    color: #94a3b8;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.paginacion-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.btn-pag {
    min-width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 2px solid var(--border-light);
    background: var(--card-bg);
    color: var(--text-muted);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-main);
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
}

.btn-pag:hover:not(:disabled) {
    border-color: var(--green-clear);
    color: var(--green-clear);
    background: rgba(22, 163, 74, 0.04);
    transform: translateY(-2px);
}

.btn-pag.active {
    background: var(--green-clear);
    border-color: var(--green-clear);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(22, 163, 74, 0.3);
}

.btn-pag:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.paginacion-info {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin: 0 8px;
    font-weight: 600;
}

.footer-simple {
    text-align: center;
    padding: 24px 6%;
    border-top: 1px solid var(--border-light);
    background: var(--card-bg);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-simple p {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

@media (max-width: 768px) {
    .hamburger-menu {
        display: block;
    }

    .nav-container {
        position: fixed;
        top: 0;
        left: -100%;
        width: 300px;
        height: 100vh;
        background: var(--nav-bg);
        padding: 100px 25px 30px;
        transition: left 0.3s ease;
        z-index: 999;
        box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
        overflow-y: auto;
        display: flex;
        flex-direction: column;
    }

    .nav-container.active {
        left: 0;
    }

    .nav-menu {
        flex-direction: column;
        gap: 8px;
        margin-bottom: 20px;
    }

    .nav-menu li a {
        display: block;
        padding: 14px 18px;
        border-radius: 10px;
        font-size: 15px;
        color: var(--text-dark);
        background: var(--card-bg);
        border: 1px solid var(--border-light);
    }

    .nav-menu li a:hover {
        background: var(--hover-bg);
        transform: translateX(5px);
    }

    .header-right .social-group {
        display: none;
    }

    .header-right .theme-toggle-container {
        display: none;
    }

    .mobile-social-menu {
        display: none;
        flex-direction: column;
        gap: 10px;
        padding: 20px 0;
        border-top: 1px solid var(--border-light);
        margin-top: 5px;
    }

    .nav-container.active .mobile-social-menu {
        display: flex;
    }

    .mobile-social-menu .social-btn-expanded {
        width: 100% !important;
        height: 50px !important;
        justify-content: flex-start !important;
        border-radius: 10px !important;
        animation: none !important;
        padding: 0 15px;
    }

    .mobile-social-menu .social-btn-expanded:hover {
        width: 100% !important;
        transform: scale(1.02) !important;
    }

    .mobile-social-menu .icon-circle {
        min-width: 40px !important;
        height: 40px !important;
        font-size: 1rem !important;
        order: 1 !important;
    }

    .mobile-social-menu .social-text-clear {
        opacity: 1 !important;
        max-width: 100% !important;
        font-size: 0.95rem !important;
        padding-left: 12px !important;
        order: 2 !important;
    }

    .mobile-theme-toggle {
        display: none;
        padding: 15px 0;
        margin-top: 5px;
        border-top: 1px solid var(--border-light);
    }

    .nav-container.active .mobile-theme-toggle {
        display: block;
    }

    .mobile-theme-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 5px 5px;
    }

    .mobile-theme-label {
        font-family: var(--font-display);
        font-weight: 700;
        font-size: 0.95rem;
        color: var(--text-dark);
        font-style: italic;
    }

    .theme-toggle-wrapper-mobile {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .mobile-toggle-btn {
        width: 44px;
        height: 22px;
        border-radius: 11px;
    }

    .mobile-toggle-btn::after {
        width: 18px;
        height: 18px;
    }

    body.dark-mode .mobile-toggle-btn::after {
        left: 24px;
    }

    .proyectos-section {
        padding-top: 120px;
    }

    .proyectos-container {
        width: 92%;
    }

    .proyectos-title {
        font-size: 1.7rem;
    }

    .grid-proyectos {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card-proyecto {
        padding: 22px 18px;
    }

    .search-wrapper {
        max-width: 100%;
    }

    header {
        padding: 10px 4%;
    }

    .header-logo {
        width: 55px;
        height: 55px;
    }

    .brand-main-title {
        font-size: 1.8rem;
    }

    .brand-sub-title {
        font-size: 0.8rem;
        padding-left: 22px;
    }
}

@media (max-width: 480px) {
    .header-logo {
        width: 45px;
        height: 45px;
    }

    .brand-wrapper {
        gap: 10px;
    }

    .brand-main-title {
        font-size: 1.5rem;
    }

    .brand-sub-title {
        font-size: 0.7rem;
        padding-left: 18px;
    }

    .nav-container {
        width: 280px;
    }
}