/* css/style.css */

:root {
    --glad-dark: #0B132B;
    --glad-deep: #0F254B;
    --glad-royal: #0055FF;
    --glad-cyan: #0077FF;
    --glad-sky: #00A3FF;
    --text-white: #ffffff;
    --text-gray-400: #9ca3af;
    --text-gray-500: #6b7280;
    --text-gray-600: #4b5563;
    --bg-white: #ffffff;
    --bg-gray-50: #f9fafb;
    --border-gray-100: #f3f4f6;
    
    --font-sans: 'Inter', system-ui, Avenir, Helvetica, Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-sans);
}

body {
    min-width: 320px;
    min-height: 100vh;
    background-color: var(--bg-white);
    color: var(--glad-dark);
    line-height: 1.5;
    overflow-x: hidden;
}

::selection {
    background-color: var(--glad-royal);
    color: var(--text-white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* Utilities */
.text-center { text-align: center; }
.text-white { color: var(--text-white); }
.text-glad-dark { color: var(--glad-dark); }
.text-glad-royal { color: var(--glad-royal); }
.text-glad-cyan { color: var(--glad-cyan); }
.text-glad-sky { color: var(--glad-sky); }

.bg-glad-dark { background-color: var(--glad-dark); }
.bg-glad-deep { background-color: var(--glad-deep); }
.bg-glad-royal { background-color: var(--glad-royal); }
.bg-white { background-color: var(--bg-white); }

.max-w-7xl { max-width: 80rem; margin-inline: auto; }
.max-w-6xl { max-width: 72rem; margin-inline: auto; }
.px-4 { padding-inline: 1rem; }
.sm\:px-6 { padding-inline: 1.5rem; }
.lg\:px-8 { padding-inline: 2rem; }

/* Gradients */
.text-gradient {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.grad-cyan-sky { background-image: linear-gradient(to right, var(--glad-cyan), var(--glad-sky)); }
.grad-royal-sky { background-image: linear-gradient(to right, var(--glad-royal), var(--glad-sky)); }
.grad-royal-cyan { background-image: linear-gradient(to right, var(--glad-royal), var(--glad-cyan)); }

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 50;
    transition: all 0.3s ease;
    padding-block: 1.25rem;
    background-color: var(--bg-white);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--border-gray-100);
    padding-block: 0.75rem;
}

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

.logo-img {
    height: 2.5rem;
    object-fit: contain;
    transition: transform 0.3s;
}
@media (min-width: 768px) {
    .logo-img { height: 3rem; }
}
.logo:hover .logo-img {
    transform: scale(1.05);
}

.desktop-menu {
    display: none;
    align-items: center;
    gap: 2rem;
}
@media (min-width: 768px) {
    .desktop-menu { display: flex; }
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.025em;
    color: var(--glad-dark);
    transition: color 0.3s;
    position: relative;
}
.nav-link:hover {
    color: var(--glad-royal);
}
.nav-link.active {
    color: var(--glad-royal);
}
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--glad-royal);
}

.btn-primary {
    padding: 0.625rem 1.5rem;
    background-color: var(--glad-royal);
    color: var(--text-white);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 9999px;
    transition: all 0.3s;
    box-shadow: 0 4px 6px -1px rgba(0, 85, 255, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-primary:hover {
    background-color: var(--glad-cyan);
    box-shadow: 0 10px 15px -3px rgba(0, 119, 255, 0.4);
    transform: translateY(-2px);
}

/* Mobile Menu */
.mobile-toggle {
    display: block;
    color: var(--glad-dark);
    padding: 0.5rem;
}
@media (min-width: 768px) {
    .mobile-toggle { display: none; }
}

.mobile-menu {
    display: none;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-gray-100);
    overflow: hidden;
}
.mobile-menu.open {
    display: block;
    animation: slideDown 0.3s ease forwards;
}
@keyframes slideDown {
    from { opacity: 0; max-height: 0; }
    to { opacity: 1; max-height: 300px; }
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--glad-dark);
    margin-bottom: 0.5rem;
}
.mobile-nav-link:hover {
    background-color: var(--bg-gray-50);
}
.mobile-nav-link.active {
    background-color: rgba(0, 85, 255, 0.1);
    color: var(--glad-royal);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--glad-dark);
    padding-top: 4rem;
}

.bg-gradient-circle {
    position: absolute;
    width: 24rem;
    height: 24rem;
    border-radius: 50%;
    filter: blur(120px);
    animation: pulse 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
.bg-gradient-circle.top {
    top: 25%;
    left: 25%;
    background-color: rgba(0, 85, 255, 0.2);
}
.bg-gradient-circle.bottom {
    bottom: 25%;
    right: 25%;
    background-color: rgba(0, 119, 255, 0.2);
    animation-delay: 1s;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .5; transform: scale(1.05); }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 10;
    width: 100%;
}
@media (min-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr 1fr; }
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    background-color: rgba(15, 37, 75, 0.5);
    border: 1px solid rgba(0, 85, 255, 0.3);
    color: var(--glad-cyan);
    font-size: 0.875rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(12px);
}
.badge-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background-color: var(--glad-cyan);
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: 3rem;
    line-height: 1.1;
    font-weight: 900;
    letter-spacing: -0.025em;
    color: var(--text-white);
    margin-bottom: 1.5rem;
}
@media (min-width: 768px) { .hero-title { font-size: 3.75rem; } }
@media (min-width: 1024px) { .hero-title { font-size: 4.5rem; } }

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray-400);
    max-width: 36rem;
    margin-bottom: 2.5rem;
    font-weight: 300;
    line-height: 1.625;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
@media (min-width: 640px) {
    .hero-buttons { flex-direction: row; align-items: center; }
}

.btn-secondary {
    padding: 1rem 2rem;
    background-color: var(--glad-deep);
    color: var(--text-white);
    border-radius: 0.5rem;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
    display: inline-flex;
    justify-content: center;
}
.btn-secondary:hover {
    background-color: rgba(15, 37, 75, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-hero-primary {
    padding: 1rem 2rem;
    border-radius: 0.5rem;
}

.hero-visual {
    display: none;
    position: relative;
}
@media (min-width: 1024px) {
    .hero-visual { display: block; }
}

.feature-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    position: relative;
}
.feature-card {
    padding: 2rem;
    background-color: rgba(15, 37, 75, 0.8);
    backdrop-filter: blur(24px);
    border-radius: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s;
}
.feature-card:hover {
    border-color: rgba(0, 85, 255, 0.5);
}
.feature-card.offset {
    transform: translateY(2rem);
}
.feature-icon-wrapper {
    padding: 0.75rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    display: inline-block;
    margin-bottom: 1rem;
}
.feature-card:hover .feature-icon-wrapper {
    background-color: rgba(255, 255, 255, 0.1);
}
.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}
.feature-desc {
    font-size: 0.875rem;
    color: var(--text-gray-400);
}

.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);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Footer */
footer {
    background-color: var(--glad-dark);
    border-top: 1px solid var(--glad-deep);
    padding-block: 4rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}
@media (min-width: 768px) {
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-white);
    letter-spacing: -0.025em;
}
.footer-tagline {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--text-gray-400);
    margin-bottom: 1.5rem;
}
.footer-desc {
    font-size: 0.875rem;
    color: var(--text-gray-400);
    line-height: 1.625;
}
.footer-socials {
    display: flex;
    gap: 1.25rem;
}
.social-link {
    padding: 0.625rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
    color: var(--text-gray-400);
    transition: all 0.3s;
}
.social-link:hover {
    background-color: var(--glad-royal);
    color: var(--text-white);
}
.footer-line {
    width: 6rem;
    height: 0.25rem;
    border-radius: 9999px;
    background-image: linear-gradient(to right, var(--glad-royal), var(--glad-sky));
    margin-bottom: 1.5rem;
}
@media (min-width: 768px) {
    .footer-line { margin-left: auto; }
}
.footer-copyright {
    color: var(--text-gray-500);
    font-size: 0.875rem;
    font-weight: 500;
}
@media (min-width: 768px) {
    .footer-copyright { text-align: right; }
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    background-color: #25D366;
    color: white;
    padding: 0.875rem;
    border-radius: 50%;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.whatsapp-btn:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Sections */
.section {
    padding-block: 6rem;
}
.section-subtitle {
    font-size: 0.875rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--glad-cyan);
    margin-bottom: 0.75rem;
}
.section-title {
    font-size: 2.25rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
}
@media (min-width: 768px) {
    .section-title { font-size: 3rem; }
}

/* Projects */
.filter-btn {
    padding: 0.625rem 1.5rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 700;
    transition: all 0.3s;
    background-color: var(--bg-gray-50);
    color: var(--text-gray-500);
}
.filter-btn:hover {
    background-color: var(--border-gray-100);
    color: var(--glad-dark);
}
.filter-btn.active {
    background-color: var(--glad-royal);
    color: var(--text-white);
    box-shadow: 0 10px 15px -3px rgba(0, 85, 255, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}
@media (min-width: 768px) {
    .projects-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
    .projects-grid { grid-template-columns: repeat(3, 1fr); }
}

.project-card {
    background-color: var(--bg-white);
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-gray-100);
    transition: all 0.3s;
    opacity: 1;
    transform: scale(1);
}
.project-card.hidden {
    display: none;
}
.project-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 8px 30px rgba(0, 85, 255, 0.12);
}
.project-img-wrapper {
    position: relative;
    height: 14rem;
    overflow: hidden;
}
.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease-out;
}
.project-card:hover .project-img {
    transform: scale(1.05);
}
.project-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(11, 19, 43, 0.6);
    opacity: 0;
    transition: opacity 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 20;
}
.project-card:hover .project-overlay {
    opacity: 1;
}
.project-link-btn {
    padding: 0.75rem;
    border-radius: 50%;
    background-color: var(--bg-white);
    color: var(--glad-dark);
    transition: all 0.3s;
}
.project-link-btn:hover {
    transform: scale(1.1);
    color: var(--glad-royal);
}
.project-link-btn.primary {
    background-color: var(--glad-royal);
    color: var(--text-white);
}
.project-link-btn.primary:hover {
    background-color: var(--glad-cyan);
}
.project-content {
    padding: 2rem;
}
.project-tag {
    font-size: 0.75rem;
    font-weight: 900;
    color: var(--glad-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-block: 0.5rem 0.75rem;
    transition: color 0.3s;
}
.project-card:hover .project-title {
    color: var(--glad-royal);
}
.project-desc {
    color: var(--text-gray-500);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}
.project-tags-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.tag {
    padding: 0.25rem 0.75rem;
    background-color: rgba(0, 85, 255, 0.05);
    color: var(--glad-royal);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0.5rem;
}

/* Skills */
.bg-glad-dark-section {
    background-color: var(--glad-dark);
    color: var(--text-white);
}
.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}
@media (min-width: 768px) {
    .skills-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
    .skills-grid { grid-template-columns: repeat(4, 1fr); }
}
.skill-card {
    background-color: rgba(15, 37, 75, 0.5);
    backdrop-filter: blur(4px);
    border-radius: 1.5rem;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s;
}
.skill-card:hover {
    border-color: rgba(0, 85, 255, 0.3);
}
.skill-icon-wrapper {
    width: 4rem;
    height: 4rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    transition: all 0.3s;
}
.skill-card:hover .skill-icon-wrapper {
    transform: scale(1.1);
    background-color: rgba(255, 255, 255, 0.1);
}
.skill-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}
.skill-list li {
    display: flex;
    align-items: center;
    color: var(--text-gray-400);
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}
.skill-card:hover .skill-list li {
    color: #d1d5db;
}
.skill-dot {
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 50%;
    background-color: var(--glad-cyan);
    margin-right: 0.75rem;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}
@media (min-width: 1024px) {
    .about-grid { grid-template-columns: 5fr 7fr; }
}
.about-card-main {
    background-color: var(--bg-white);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-gray-100);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}
.about-card-main:hover {
    border-color: rgba(0, 85, 255, 0.2);
}
.about-card-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--glad-royal);
    transition: width 0.3s;
}
.about-card-main:hover::before {
    width: 8px;
}
.about-sub-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}
@media (min-width: 768px) {
    .about-sub-grid { grid-template-columns: 1fr 1fr; }
}
.about-card-small {
    background-color: var(--bg-white);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-gray-100);
    transition: all 0.3s;
}
.about-card-small:hover {
    box-shadow: 0 8px 30px rgba(0, 85, 255, 0.08);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}
@media (min-width: 1024px) {
    .contact-grid { grid-template-columns: 1fr 1fr; }
}
.contact-info-card, .contact-form-card {
    background-color: rgba(15, 37, 75, 0.3);
    border-radius: 1.5rem;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(4px);
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    margin-bottom: 2rem;
}
.contact-icon-wrap {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 1rem;
    transition: background-color 0.3s;
}
.contact-item:hover .contact-icon-wrap {
    background-color: rgba(0, 85, 255, 0.2);
}
.contact-label {
    color: var(--text-white);
    font-weight: 600;
    margin-bottom: 0.25rem;
}
.contact-val {
    color: var(--text-gray-400);
}
.contact-val:hover {
    color: var(--glad-sky);
}

.form-group {
    margin-bottom: 1.5rem;
}
.form-label {
    display: block;
    color: #d1d5db;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.form-control {
    width: 100%;
    background-color: rgba(11, 19, 43, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    color: var(--text-white);
    transition: all 0.3s;
    font-family: inherit;
}
.form-control:focus {
    outline: none;
    border-color: var(--glad-royal);
    box-shadow: 0 0 0 1px var(--glad-royal);
}
.btn-submit {
    width: 100%;
    background-image: linear-gradient(to right, var(--glad-royal), var(--glad-cyan));
    color: white;
    font-weight: 700;
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all 0.3s;
}
.btn-submit:hover {
    background-image: linear-gradient(to right, var(--glad-cyan), var(--glad-sky));
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 119, 255, 0.4);
}