/* ==========================================
   RESET Y VARIABLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --bg-dark: #07090e;
    --primary-cyan: #00f2fe;
    --primary-blue: #4facfe;
    --whatsapp-green: #25d366;
    --glass-bg: rgba(18, 24, 38, 0.75);
    --glass-border: rgba(255, 255, 255, 0.12);
    --text-main: #ffffff;
    --text-muted: #a0aec0;
}

body {
    min-height: 100vh;
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem 1rem 4rem 1rem;
    position: relative;
    overflow-x: hidden;
}

/* ==========================================
   FONDO CON EFECTO DE PROFUNDIDAD (BLUR)
   ========================================== */
.bg-overlay {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    background-image: url('https://images.unsplash.com/photo-1618005182384-a83a8bd57fbe?auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    filter: blur(20px) brightness(0.35);
    transform: scale(1.05);
    z-index: -1;
}

/* ==========================================
   CONTENEDOR PRINCIPAL
   Ampliado para albergar 4 columnas cómodamente
   ========================================== */
.container {
    width: 100%;
    max-width: 1150px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 7rem; /* ESPACIO CONSIDERABLE ENTRE HERO Y FORMULARIO */
}

/* ==========================================
   SECCIÓN HERO & HEADER
   ========================================== */
.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
    width: 100%;
}

.badge-tech {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    border-radius: 50px;
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.3);
    color: var(--primary-cyan);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
}

.badge-tech svg {
    width: 14px;
    height: 14px;
}

.brand-title {
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 242, 254, 0.35);
}

.brand-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    line-height: 1.5;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   FILTROS DE PORTAFOLIO (PESTAÑAS)
   ========================================== */
.portfolio-filter-container {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 0.35rem;
    border-radius: 50px;
    width: 100%;
    max-width: 450px;
    gap: 0.4rem;
}

.filter-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: 50px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn svg {
    width: 16px;
    height: 16px;
}

.filter-btn.active {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(79, 172, 254, 0.2));
    border: 1px solid var(--primary-cyan);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
}

/* ==========================================
   GRID DE PORTAFOLIO (4 COLUMNAS HORIZONTALES)
   ========================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr); /* 1 col en móviles */
    gap: 1.3rem;
    width: 100%;
}

/* En tablets (2 columnas) */
@media (min-width: 600px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* En escritorio (4 COLUMNAS HORIZONTALES EXACTAS) */
@media (min-width: 900px) {
    .portfolio-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.4);
    box-shadow: 0 12px 30px rgba(0, 242, 254, 0.25);
}

.project-card:active {
    transform: scale(0.98);
}

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

.project-img-wrapper {
    position: relative;
    width: 100%;
    height: 160px;
    overflow: hidden;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img {
    transform: scale(1.06);
}

.status-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 0.3rem 0.7rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    backdrop-filter: blur(8px);
}

.status-done {
    background: rgba(37, 211, 102, 0.85);
    color: #ffffff;
}

.status-progress {
    background: rgba(255, 170, 0, 0.85);
    color: #000000;
}

.project-content {
    padding: 1rem 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    text-align: left;
}

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

.project-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
}

.external-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-cyan);
}

.project-category {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ==========================================
   BOTÓN CON ANIMACIÓN DE REBOTE (CTA SCROLL)
   ========================================== */
.cta-scroll-wrapper {
    margin-top: 1.5rem;
    width: 100%;
    display: flex;
    justify-content: center;
}

.btn-bounce {
    padding: 1rem 2rem;
    border-radius: 50px;
    border: 1px solid var(--primary-cyan);
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(79, 172, 254, 0.2));
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
    animation: bounce 2s infinite;
    transition: background 0.3s ease;
}

.btn-bounce svg {
    width: 20px;
    height: 20px;
}

.btn-bounce:active {
    transform: scale(0.96);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ==========================================
   SECCIÓN FORMULARIO (Centrado y elegante)
   ========================================== */
.form-section {
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

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

.form-section-title {
    font-size: 1.7rem;
    font-weight: 800;
    color: #ffffff;
}

.form-section-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

/* Glassmorphism Card para el Formulario */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 1.6rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-card.fade-out {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
    pointer-events: none;
}

/* Pasos del Formulario */
.form-step {
    display: none;
    opacity: 0;
    transform: translateY(15px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.form-step.active {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    opacity: 1;
    transform: translateY(0);
}

.step-label {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #e2e8f0;
}

.step-label svg {
    width: 20px;
    height: 20px;
    color: var(--primary-cyan);
}

input[type="text"] {
    width: 100%;
    padding: 0.9rem 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: #fff;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 12px rgba(0, 242, 254, 0.3);
    background: rgba(255, 255, 255, 0.08);
}

/* Checkboxes */
.checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    user-select: none;
    padding: 0.75rem 0.9rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all 0.25s ease;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    height: 20px;
    width: 20px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    flex-shrink: 0;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-cyan);
    border-color: var(--primary-cyan);
}

.checkmark:after {
    content: "";
    display: none;
    width: 5px;
    height: 10px;
    border: solid #000;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-text {
    font-size: 0.9rem;
    color: #cbd5e0;
}

.collapsible-content {
    display: none;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 0.2rem;
    animation: fadeIn 0.3s ease forwards;
}

.collapsible-content.show {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Botones */
.btn-secondary {
    width: 100%;
    padding: 0.85rem;
    border-radius: 12px;
    border: 1px solid var(--primary-cyan);
    background: rgba(0, 242, 254, 0.1);
    color: var(--primary-cyan);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:active {
    transform: scale(0.98);
    background: rgba(0, 242, 254, 0.2);
}

.btn-next {
    width: 100%;
    padding: 0.85rem;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
    color: #07090e;
    font-weight: 700;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 0.4rem;
}

.btn-next:active {
    transform: scale(0.98);
}

.status-text {
    font-size: 0.85rem;
    color: var(--primary-cyan);
    min-height: 1.2rem;
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.6rem;
}

.option-card {
    position: relative;
    cursor: pointer;
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.card-content {
    padding: 0.9rem 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 0.85rem;
    transition: all 0.25s ease;
}

.card-content svg {
    width: 22px;
    height: 22px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #e2e8f0;
}

.card-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.2;
}

.option-card input[type="radio"]:checked + .card-content {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(79, 172, 254, 0.15));
    border-color: var(--primary-cyan);
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
}

.option-card input[type="radio"]:checked + .card-content .card-title {
    color: #ffffff;
}

.option-card input[type="radio"]:checked + .card-content svg {
    color: var(--primary-cyan);
}

/* WhatsApp Button */
.btn-whatsapp {
    width: 100%;
    padding: 1rem;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(37, 211, 102, 0.3);
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.btn-whatsapp:active {
    transform: scale(0.97);
}

/* Confirmation Modal */
.confirmation-card {
    display: none;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    text-align: center;
    align-items: center;
    justify-content: center;
    padding: 2.2rem 1.5rem;
    gap: 1.2rem;
}

.confirmation-card.show {
    display: flex;
}

.confirmation-card.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.success-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(37, 211, 102, 0.15);
    border: 1px solid rgba(37, 211, 102, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--whatsapp-green);
    margin-bottom: 0.3rem;
    box-shadow: 0 0 25px rgba(37, 211, 102, 0.25);
}

.success-icon svg {
    width: 40px;
    height: 40px;
}

.confirmation-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
}

.confirmation-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.btn-rounded-dummy {
    width: 100%;
    max-width: 220px;
    padding: 0.85rem 1.8rem;
    border-radius: 50px;
    border: 1px solid var(--primary-cyan);
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(79, 172, 254, 0.15));
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
    margin-top: 0.5rem;
}

.btn-rounded-dummy:active {
    transform: scale(0.96);
    background: rgba(0, 242, 254, 0.25);
}