/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Prevent horizontal overflow */
html,
body {
    max-width: 100vw;
    overflow-x: hidden;
}

* {
    max-width: 100%;
    box-sizing: border-box;
}

/* Ensure images and media don't overflow */
img,
video,
iframe,
embed,
object {
    max-width: 100%;
    height: auto;
}

/* Prevent text from causing horizontal overflow */
h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
div {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

:root {
    --primary-color: #020a0f;
    --primary-light: #4a8bb8;
    --primary-dark: #1e5470;
    --secondary-color: #d0f1ea;
    --secondary-light: #e6f7f2;
    --secondary-dark: #a8e6d3;
    --accent-color: #1a4257;
    --text-dark: #c69c39;
    --text-light: #6b7280;
    --text-white: #ffffff;
    --text-muted: #9ca3af;
    --background-light: #f8fafc;
    --background-white: #ffffff;
    --background-dark: #1a4257;
    --background-card: #ffffff;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --gradient-primary: linear-gradient(135deg, #2b739d 0%, #1e5470 100%);
    --gradient-secondary: linear-gradient(135deg, #2b739d 0%, #d0f1ea 100%);
    --gradient-hero: linear-gradient(
        135deg,
        #2b739d 0%,
        #1e5470 50%,
        #d0f1ea 100%
    );
    --gradient-accent: linear-gradient(135deg, #d0f1ea 0%, #2b739d 100%);
    --shadow-light: 0 1px 3px rgba(43, 115, 157, 0.1);
    --shadow-medium: 0 4px 15px rgba(43, 115, 157, 0.15);
    --shadow-heavy: 0 25px 50px rgba(43, 115, 157, 0.2);
    --border-radius: 20px;
    --border-radius-sm: 12px;
    --border-radius-lg: 32px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    max-width: 100vw;
    overflow-x: hidden;
}

body {
    font-family: "Inter", sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1.5rem 0 1rem 0;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
    border-bottom: 1px solid rgba(100, 116, 139, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Banner Structure */
.nav-banner {
    height: 70px;
    width: auto;
    max-width: 400px;
    object-fit: cover;
    object-position: center;
}

/* Banner responsive display */
.banner-desktop {
    display: block;
}

.banner-mobile {
    display: none;
}

/* Hide old text logo by default */
.nav-logo h2,
.nav-logo span {
    display: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: 10px;
    z-index: 1001;
    border: none;
    background: none;
    position: relative;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    border-radius: 2px;
    display: block;
}

/* Hero Section */
.hero {
    background: var(--background-white);
    color: var(--text-dark);
    padding: 140px 0 80px;
    border-bottom: 3px solid var(--secondary-color);
}

.hero-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-header {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.highlight {
    color: var(--primary-color);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 400;
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 3rem;
}

.hero-info {
    background: var(--background-light);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.hero-info h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.info-list {
    list-style: none;
    margin-bottom: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.2rem;
    padding: 0;
}

.info-list li {
    background: var(--background-white);
    border-radius: var(--border-radius-sm);
    padding: 1.8rem;
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(43, 115, 157, 0.08);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 100px;
    width: 100%;
    box-sizing: border-box;
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.info-list li:nth-child(1) {
    animation-delay: 0.1s;
}
.info-list li:nth-child(2) {
    animation-delay: 0.2s;
}
.info-list li:nth-child(3) {
    animation-delay: 0.3s;
}
.info-list li:nth-child(4) {
    animation-delay: 0.4s;
}
.info-list li:nth-child(5) {
    animation-delay: 0.5s;
}
.info-list li:nth-child(6) {
    animation-delay: 0.6s;
}
.info-list li:nth-child(7) {
    animation-delay: 0.7s;
}
.info-list li:nth-child(8) {
    animation-delay: 0.8s;
}

.info-list li::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.info-list li:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-heavy);
    border-color: rgba(43, 115, 157, 0.2);
}

@media (hover: hover) {
    .info-list li:hover {
        transform: translateY(-3px) scale(1.02);
    }
}

@media (hover: none) {
    .info-list li:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
}

.info-list li:hover::before {
    width: 6px;
}

.info-list i {
    color: var(--primary-color);
    font-size: 1.4rem;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(43, 115, 157, 0.12);
    border-radius: 50%;
    padding: 10px;
    flex-shrink: 0;
    transition: var(--transition);
    margin-top: 2px;
    animation: slideInLeft 0.4s ease-out forwards;
    animation-delay: inherit;
}

.info-list li:hover i {
    background: var(--primary-color);
    color: var(--text-white);
    transform: scale(1.15);
    box-shadow: 0 4px 12px rgba(43, 115, 157, 0.3);
}

.info-list span {
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.6;
    flex: 1;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
}

.professor-card {
    background: var(--background-white);
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-light);
}

.professor-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.professor-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.credentials {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.badge {
    background: var(--primary-color);
    color: var(--text-white);
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
}

.hero-cta {
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-white);
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    border: none;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-heavy);
}

.btn-primary i {
    font-size: 1rem;
}

/* Responsive adjustments for hero */
@media (max-width: 768px) {
    .hero-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-info {
        order: 2;
    }

    .professor-card {
        order: 1;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }
}

/* About Section */
.about {
    padding: 5rem 0;
    background: var(--background-light);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
}

.about-image {
    position: sticky;
    top: 120px;
    display: flex;
    justify-content: center;
}

.profile-photo {
    width: 100%;
    max-width: 500px;
    height: auto;
    aspect-ratio: 1;
    border-radius: var(--border-radius);
    object-fit: cover;
    box-shadow: var(--shadow-heavy);
    border: 4px solid var(--secondary-color);
    transition: var(--transition);
}

.profile-photo:hover {
    transform: scale(1.02);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.photo-placeholder {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
    line-height: 1.4;
    box-shadow: var(--shadow-heavy);
    transition: var(--transition);
    border: 4px solid var(--secondary-color);
}

.photo-placeholder:hover {
    transform: scale(1.02);
}

.about-text h3 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.experience-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 3rem 0;
    padding: 2rem;
    background: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
}

.stat {
    text-align: center;
}

.stat h4 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-light);
    font-weight: 500;
}

.credentials-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 3rem;
}

.credential {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border-left: 4px solid var(--primary-color);
}

.credential i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.credential h5 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.credential p {
    color: var(--text-light);
    margin: 0;
}

/* Method Section */
.method {
    padding: 5rem 0;
    background: var(--background-light);
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.method-card {
    background: var(--background-card);
    padding: 3rem 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(43, 115, 157, 0.1);
    position: relative;
    overflow: hidden;
}

.method-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: var(--transition);
}

.method-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

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

.method-icon {
    width: 90px;
    height: 90px;
    background: var(--primary-color);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow-medium);
}

.method-icon i {
    font-size: 2rem;
    color: var(--text-white);
}

.method-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.method-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Services Section */
.services {
    padding: 5rem 0;
    background: var(--background-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.service-card {
    background: var(--background-card);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    position: relative;
    border: 1px solid rgba(43, 115, 157, 0.1);
}

.service-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.02);
    background: linear-gradient(
        135deg,
        rgba(43, 115, 157, 0.02) 0%,
        rgba(208, 241, 234, 0.05) 100%
    );
}

.service-card.featured::before {
    content: "Más popular";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--text-white);
    padding: 0.6rem 1.8rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: var(--shadow-light);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.service-card.featured:hover {
    transform: translateY(-5px) scale(1.02);
}

.service-header {
    margin-bottom: 1.5rem;
}

.service-header h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-type {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.type-badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.type-badge.online {
    background: #e3f2fd;
    color: var(--accent-color);
}

.type-badge.presencial {
    background: #f3e5f5;
    color: #7b1fa2;
}

.type-badge.business {
    background: #fff3e0;
    color: #f57c00;
}

.service-levels {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.level {
    background: var(--primary-color);
    color: var(--text-white);
    padding: 0.4rem 1rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: var(--shadow-light);
}

.service-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.service-features i {
    color: var(--success-color);
    font-size: 1.1rem;
}

.service-pricing {
    margin-bottom: 1.5rem;
    text-align: center;
    padding: 2rem;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.service-pricing::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.price {
    position: relative;
    z-index: 1;
}

.price .amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.price .period {
    font-size: 1.2rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-left: 0.25rem;
}

.service-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--background-light);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 0.9rem;
    border: 1px solid rgba(43, 115, 157, 0.2);
}

.service-location i {
    color: var(--primary-color);
}

.pricing-note {
    text-align: center;
    padding: 1.5rem;
    background: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.pricing-note i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    background: var(--background-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.contact-reasons {
    margin-bottom: 3rem;
}

.reason {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.reason i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.reason h5 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.reason p {
    color: var(--text-light);
    margin: 0;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--background-light);
    border-radius: var(--border-radius);
}

.contact-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.contact-item h5 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* Contact Form */
.contact-form-container {
    background: var(--background-light);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.form-subtitle {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--background-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--text-light);
    transition: var(--transition);
    pointer-events: none;
    background: var(--background-white);
    padding: 0 0.5rem;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group select:focus + label,
.form-group select:not([value=""]) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.5rem;
    left: 0.5rem;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.form-group select option[disabled] {
    display: none;
}

.form-group select:invalid {
    color: var(--text-light);
}

.form-group select:valid {
    color: var(--text-dark);
}

.form-group select:focus + label,
.form-group select[value]:not([value=""]) + label,
.form-group select.has-value + label {
    top: -0.5rem;
    left: 0.5rem;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.submit-btn {
    width: 100%;
    background: var(--gradient-primary);
    color: var(--text-white);
    border: none;
    padding: 1.2rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.submit-btn:active {
    transform: translateY(0);
}

.form-note {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.form-note i {
    color: var(--success-color);
}

/* Footer */
.footer {
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-main h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.footer-main p {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-credentials {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-credentials span {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    width: fit-content;
}

.footer-links h4,
.footer-info h4 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.footer-links ul,
.footer-info ul {
    list-style: none;
}

.footer-links li,
.footer-info li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-white);
}

.footer-info i {
    color: var(--secondary-color);
    width: 16px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
}

.footer-domain {
    font-weight: 600;
    color: var(--secondary-color);
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 3rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .about-image {
        position: static;
        justify-self: center;
    }

    .profile-photo,
    .photo-placeholder {
        max-width: 350px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .info-list {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }

    .info-list li {
        padding: 1.4rem;
        margin: 0;
        gap: 1rem;
        min-height: 90px;
    }

    .info-list span {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .info-list i {
        font-size: 1.2rem;
        padding: 8px;
        width: 24px;
        height: 24px;
    }
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .navbar {
        padding: 1rem 0 0.8rem 0;
    }

    /* Force show hamburger on mobile */
    .hamburger {
        display: flex !important;
        flex-direction: column;
        cursor: pointer;
        gap: 4px;
        padding: 10px;
        z-index: 1002 !important;
        border: none;
        background: none;
        position: relative;
    }

    /* Hide desktop menu on mobile and show mobile version */
    .nav-menu {
        position: fixed !important;
        left: -100vw !important;
        top: 80px !important;
        flex-direction: column !important;
        background-color: rgba(255, 255, 255, 0.98) !important;
        width: 100vw !important;
        max-height: calc(100vh - 80px) !important;
        overflow-y: auto !important;
        text-align: center;
        transition: left 0.3s ease !important;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.15) !important;
        backdrop-filter: blur(10px);
        padding: 1rem 0 !important;
        gap: 0.5rem !important;
        z-index: 1000 !important;
        list-style: none !important;
        margin: 0 !important;
    }

    .nav-menu.active {
        left: 0 !important;
        display: flex !important;
    }

    .nav-menu li {
        margin: 0 !important;
        padding: 0.5rem 0 !important;
        width: 100%;
    }

    .nav-menu a {
        font-size: 1.1rem !important;
        padding: 1rem 2rem !important;
        display: block !important;
        border-radius: 8px;
        margin: 0 1rem !important;
        transition: all 0.3s ease;
        color: var(--text-dark) !important;
        text-decoration: none !important;
    }

    .nav-menu a:hover {
        background: var(--secondary-color) !important;
        color: var(--primary-color) !important;
    }

    /* Hamburger animation */
    .hamburger.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg) !important;
    }

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

    .hamburger.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg) !important;
    }

    /* Banner mobile display */
    .banner-desktop {
        display: none;
    }

    .banner-mobile {
        display: block;
    }

    .nav-banner {
        height: 50px;
        max-width: 300px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .about {
        padding: 4rem 0;
    }

    .method {
        padding: 4rem 0;
    }

    .services {
        padding: 4rem 0;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .about {
        padding: 3rem 0;
    }

    .method {
        padding: 3rem 0;
    }

    .services {
        padding: 3rem 0;
    }

    .contact {
        padding: 3rem 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }

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

    .btn-primary,
    .btn-secondary {
        text-align: center;
        justify-content: center;
    }

    .experience-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

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

    .service-card.featured {
        transform: none;
    }

    .service-card.featured:hover {
        transform: translateY(-5px);
    }

    .contact-form-container {
        padding: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-credentials {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
        max-width: 100vw;
    }

    .info-list {
        gap: 0.8rem;
        margin-bottom: 1rem;
    }

    .info-list li {
        padding: 1.2rem;
        gap: 0.9rem;
        min-height: 80px;
        animation-duration: 0.3s;
    }

    .info-list li:nth-child(1) {
        animation-delay: 0.05s;
    }
    .info-list li:nth-child(2) {
        animation-delay: 0.1s;
    }
    .info-list li:nth-child(3) {
        animation-delay: 0.15s;
    }
    .info-list li:nth-child(4) {
        animation-delay: 0.2s;
    }
    .info-list li:nth-child(5) {
        animation-delay: 0.25s;
    }
    .info-list li:nth-child(6) {
        animation-delay: 0.3s;
    }
    .info-list li:nth-child(7) {
        animation-delay: 0.35s;
    }
    .info-list li:nth-child(8) {
        animation-delay: 0.4s;
    }

    .info-list i {
        font-size: 1.1rem;
        padding: 7px;
        width: 22px;
        height: 22px;
    }

    .info-list span {
        font-size: 0.87rem;
        line-height: 1.4;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .banner-mobile {
        max-height: 35px;
        max-width: 200px;
    }

    .nav-banner {
        height: 40px;
        max-width: 250px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .professor-card {
        padding: 1.5rem;
    }

    .about-text h3 {
        font-size: 1.5rem;
    }

    .method-card {
        padding: 2rem 1.5rem;
    }

    .service-card {
        padding: 2rem 1.5rem;
    }

    .contact-form-container {
        padding: 1rem;
    }
}

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

.hero-content,
.professor-card,
.method-card,
.service-card,
.credential {
    animation: fadeInUp 0.8s ease-out;
}

/* Scroll behavior */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}