/* ===================================
   MODERN PORTFOLIO - CUSTOM THEME
   Dark Mode Premium Design
   =================================== */

/* === ROOT VARIABLES === */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);

    --bg-primary: #0a0a0f;
    --bg-secondary: #13131a;
    --bg-card: #1a1a24;
    --bg-hover: #22222e;

    --text-primary: #ffffff;
    --text-secondary: #b4b4c5;
    --text-muted: #6b6b7f;

    --accent-purple: #667eea;
    --accent-pink: #f5576c;
    --accent-blue: #4facfe;
    --accent-cyan: #00f2fe;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);

    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === GLOBAL STYLES === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* === UTILITIES === */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-accent {
    background: var(--secondary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-glow {
    text-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

/* === BUTTONS === */
.btn-custom {
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-custom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    z-index: -1;
}

.btn-custom:hover::before {
    width: 100%;
}

.btn-primary-custom {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-outline-custom {
    background: transparent;
    color: var(--accent-purple);
    border: 2px solid var(--accent-purple);
}

.btn-outline-custom:hover {
    background: var(--accent-purple);
    color: white;
    transform: translateY(-2px);
}

/* === CARDS === */
.card-custom {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    height: 100%;
}

.card-custom:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.card-glass {
    background: rgba(26, 26, 36, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* === NAVBAR === */
.navbar-custom {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.navbar-custom.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.5rem 0;
}

.navbar-brand-custom {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link-custom {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-link-custom::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
}

.nav-link-custom:hover,
.nav-link-custom.active {
    color: var(--text-primary);
    background: rgba(102, 126, 234, 0.1);
}

.nav-link-custom:hover::after,
.nav-link-custom.active::after {
    width: 80%;
}

/* === HERO SECTION === */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.3;
}

.animated-gradient {
    position: absolute;
    width: 200%;
    height: 200%;
    background: var(--primary-gradient);
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        transform: translate(-25%, -25%) rotate(0deg);
    }
    50% {
        transform: translate(-50%, -50%) rotate(180deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.typing-animation {
    border-right: 3px solid var(--accent-purple);
    animation: blink 0.7s step-end infinite;
}

@keyframes blink {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--accent-purple);
    }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* === SECTION STYLES === */
.section-padding {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: 1rem;
}

/* === SERVICES SECTION === */
.service-card {
    position: relative;
    padding: 2.5rem;
    text-align: center;
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-glow);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === PORTFOLIO SECTION === */
.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.portfolio-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-card);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(10, 10, 15, 0.95) 0%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.portfolio-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.portfolio-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* === PROJECT MODAL === */
.modal-custom .modal-content {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-primary);
}

.modal-custom .modal-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
}

.modal-custom .modal-body {
    padding: 2rem;
}

.modal-custom .modal-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 2rem;
}

.modal-custom .btn-close {
    filter: invert(1);
}

.project-detail-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.project-detail-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.project-detail-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.project-tag {
    padding: 6px 14px;
    background: rgba(102, 126, 234, 0.2);
    color: var(--accent-purple);
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* === TECHNOLOGIES SECTION === */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.tech-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.tech-item:hover {
    transform: translateY(-5px);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: var(--shadow-md);
}

.tech-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tech-name {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* === PROCESS SECTION === */
.process-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.process-step::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    width: 2px;
    height: calc(100% + 3rem);
    background: linear-gradient(to bottom, var(--accent-purple), transparent);
}

.process-step:last-child::before {
    display: none;
}

.process-number {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    margin-right: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

.process-content {
    flex: 1;
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.process-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.process-description {
    color: var(--text-secondary);
}

/* === TESTIMONIALS SECTION === */
.testimonials-slider {
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    position: relative;
}

.testimonial-quote {
    font-size: 3rem;
    color: var(--accent-purple);
    opacity: 0.3;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.5rem;
}

.testimonial-info h4 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.testimonial-info p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* === CONTACT SECTION === */
.contact-section {
    background: var(--bg-secondary);
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

.form-control-custom {
    width: 100%;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control-custom:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control-custom::placeholder {
    color: var(--text-muted);
}

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

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-info-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: white;
}

.contact-info-item h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-info-item p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* === FOOTER === */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-purple);
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-link:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
}

/* === SCROLL TO TOP === */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* === WHATSAPP BUTTON === */
.whatsapp-float {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 1000;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.5);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* === LOADING ANIMATION === */
.loading-spinner {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top: 3px solid var(--accent-purple);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* === ALERT MESSAGES === */
.alert-custom {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    border: 1px solid;
    animation: fadeInUp 0.5s ease-out;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: #28a745;
    border-color: rgba(40, 167, 69, 0.3);
}

.alert-error {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border-color: rgba(220, 53, 69, 0.3);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }

    .hero-section {
        padding: 80px 0 60px;
    }

    .hero-cta {
        flex-direction: column;
    }

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

    .process-step {
        flex-direction: column;
        text-align: center;
    }

    .process-step::before {
        display: none;
    }

    .process-number {
        margin-right: 0;
        margin-bottom: 1rem;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 1rem;
    }

    .navbar-custom {
        padding: 0.75rem 0;
    }

    .nav-link-custom {
        padding: 0.5rem;
    }

    .whatsapp-float {
        bottom: 80px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }

    .contact-form,
    .testimonials-slider {
        padding: 0 1rem;
    }

    .portfolio-filters {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
}

/* === PRINT STYLES === */
@media print {
    .navbar-custom,
    .whatsapp-float,
    .scroll-to-top,
    .footer {
        display: none;
    }
}
  margin-bottom: 60px;
}