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

:root {
    /* Color Palette - Matching Logo */
    --primary-black: #000000;
    --dark-grey: #1a1a1a;
    --medium-grey: #2d2d2d;
    --light-grey: #404040;
    --accent-grey: #666666;
    --pure-white: #ffffff;
    --off-white: #f5f5f5;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-black) 0%, var(--dark-grey) 100%);
    --gradient-accent: linear-gradient(135deg, var(--medium-grey) 0%, var(--light-grey) 100%);
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-mono: 'Courier New', Courier, monospace;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    --border-radius: 8px;
    --border-radius-large: 16px;
    
    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index levels */
    --z-header: 1000;
    --z-modal: 2000;
    --z-dropdown: 1500;
}

body {
    font-family: var(--font-primary);
    background-color: var(--primary-black);
    color: var(--pure-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--medium-grey);
    z-index: var(--z-header);
    transition: all var(--transition-medium);
}

.navbar {
    padding: 15px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--pure-white);
    text-decoration: none;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.nav-menu {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    color: var(--pure-white);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    background-color: var(--medium-grey);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--pure-white);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

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

.nav-auth {
    display: flex;
    align-items: center;
    gap: 15px;
}

.auth-buttons {
    display: none; /* Hide by default */
    gap: 10px;
    transition: opacity 0.3s ease;
}

.auth-buttons.loaded {
    display: flex; /* Show when loaded and not logged in */
    opacity: 1;
}

.btn-login, .btn-register {
    padding: 8px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-block;
}

.btn-login {
    background: transparent;
    color: var(--pure-white);
    border: 1px solid var(--medium-grey);
}

.btn-login:hover {
    background: var(--medium-grey);
    transform: translateY(-2px);
}

.btn-register {
    background: var(--pure-white);
    color: var(--primary-black);
}

.btn-register:hover {
    background: var(--off-white);
    transform: translateY(-2px);
}

.user-menu {
    position: relative;
    display: none; /* Hidden by default, shown after auth check */
}

.user-menu.loaded {
    display: block;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-weight: bold;
    transition: all var(--transition-fast);
}

.user-avatar:hover {
    transform: scale(1.1);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--dark-grey);
    border: 1px solid var(--medium-grey);
    border-radius: var(--border-radius);
    padding: 10px 0;
    min-width: 150px;
    display: none;
    z-index: var(--z-dropdown);
}

.user-dropdown.show {
    display: block;
    animation: dropdownFadeIn 0.2s ease;
}

.user-dropdown a {
    display: block;
    padding: 10px 20px;
    color: var(--pure-white);
    text-decoration: none;
    transition: background var(--transition-fast);
}

.user-dropdown a:hover {
    background: var(--medium-grey);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--pure-white);
    transition: all var(--transition-fast);
}

/* Hero Section with Corridor Animation */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--primary-black);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

/* Static Grid Background */
.static-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.6;
}

/* Hero Content with Backdrop */
.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    padding: 40px;
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-large);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: bold;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--pure-white) 0%, var(--accent-grey) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite alternate;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

@keyframes titleGlow {
    0% { 
        filter: brightness(1);
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    }
    100% { 
        filter: brightness(1.2);
        text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
    }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--accent-grey);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 1s both;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-medium);
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--pure-white);
    color: var(--primary-black);
}

.btn-primary:hover {
    background: var(--off-white);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--pure-white);
    border: 2px solid var(--pure-white);
}

.btn-secondary:hover {
    background: var(--pure-white);
    color: var(--primary-black);
    transform: translateY(-3px);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tools Section */
.tools-section {
    padding: var(--section-padding);
    background: var(--dark-grey);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: 20px;
    color: var(--pure-white);
}

.section-subtitle {
    text-align: center;
    color: var(--accent-grey);
    font-size: 1.2rem;
    margin-bottom: 60px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.tools-placeholder {
    text-align: center;
    padding: 60px 30px;
    background: var(--gradient-accent);
    border-radius: var(--border-radius-large);
    border: 1px solid var(--medium-grey);
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.tools-placeholder h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.tools-categories h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--pure-white);
}

.simple-tools-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.simple-tool-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--gradient-accent);
    padding: 20px 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--medium-grey);
    transition: all var(--transition-medium);
}

.simple-tool-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.1);
}

.tool-icon {
    font-size: 1.5rem;
    margin-right: 15px;
}

.tool-name {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--pure-white);
    margin-right: 15px;
}

.tool-price, .tool-description {
    font-size: 0.9rem;
    color: var(--accent-grey);
    margin-right: 20px;
    min-width: 120px;
    text-align: center;
}

.tool-btn {
    padding: 8px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    background: var(--pure-white);
    color: var(--primary-black);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-medium);
    min-width: 80px;
}

.tool-btn:hover {
    background: var(--off-white);
    transform: translateY(-1px);
}

.tool-btn:disabled {
    background: var(--medium-grey);
    color: var(--pure-white);
    cursor: not-allowed;
    opacity: 0.7;
}

.tool-btn:disabled:hover {
    transform: none;
    background: var(--medium-grey);
}

/* Development Badge in Hero */
.dev-badge {
    display: inline-block;
    font-size: 0.35em;
    background: rgba(255, 255, 255, 0.2);
    color: var(--pure-white);
    padding: 0.4em 1em;
    border-radius: 6px;
    font-weight: 600;
    margin-left: 0.5em;
    vertical-align: middle;
    letter-spacing: 1px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Tool Status Badges */
.tool-status-badge {
    display: block;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 10px auto;
    text-align: center;
    background: rgba(255, 255, 255, 0.15);
    color: var(--pure-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    width: fit-content;
}

.category-card {
    background: var(--gradient-accent);
    padding: 40px 30px;
    border-radius: var(--border-radius-large);
    text-align: center;
    border: 1px solid var(--medium-grey);
    transition: all var(--transition-medium);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.8s;
}

.category-card:hover::before {
    left: 100%;
}

.category-card:hover {
    transform: translateY(-10px);
    border-color: var(--pure-white);
    box-shadow: 0 15px 30px rgba(255, 255, 255, 0.1);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.category-card h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--pure-white);
}

.category-card p {
    color: var(--accent-grey);
    margin-bottom: 20px;
    line-height: 1.6;
}

.tool-pricing {
    margin: 20px 0;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius);
    border: 1px solid var(--medium-grey);
}

.price {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--pure-white);
    margin-bottom: 5px;
}

.price-note {
    font-size: 0.9rem;
    color: var(--accent-grey);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-btn {
    margin-top: 15px;
    width: 100%;
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 600;
    background: var(--pure-white);
    color: var(--primary-black);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-medium);
}

.category-btn:hover {
    background: var(--off-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
}

.coming-soon-notice {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background: var(--gradient-accent);
    border-radius: var(--border-radius-large);
    border: 1px solid var(--medium-grey);
}

.coming-soon-notice h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--pure-white);
}

.coming-soon-notice p {
    color: var(--accent-grey);
    font-size: 1.1rem;
}

/* Dashboard Notice for Logged In Users */
.user-dashboard-notice {
    margin-top: 40px;
    margin-bottom: 20px;
}

.dashboard-card {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: var(--border-radius-large);
    border: 2px solid #0f3460;
    box-shadow: 0 10px 30px rgba(15, 52, 96, 0.3);
}

.dashboard-card h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--pure-white);
    font-weight: 600;
}

.dashboard-card p {
    color: #b0c4de;
    font-size: 1.1rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.dashboard-card .btn-primary {
    background: linear-gradient(135deg, #0f3460 0%, #4a90e2 100%);
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-medium);
}

.dashboard-card .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.4);
}

/* About Section */
.about-section {
    padding: var(--section-padding);
    background: var(--primary-black);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    color: var(--accent-grey);
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--pure-white);
}

.stat-label {
    color: var(--accent-grey);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-image {
    position: relative;
}

.image-placeholder {
    background: var(--gradient-accent);
    height: 400px;
    border-radius: var(--border-radius-large);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tech-visualization {
    position: relative;
    width: 100%;
    height: 100%;
}

.code-lines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 10px,
            var(--light-grey) 10px,
            var(--light-grey) 11px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 20px,
            var(--medium-grey) 20px,
            var(--medium-grey) 21px
        );
    animation: codeFlow 4s linear infinite;
}

@keyframes codeFlow {
    0% { transform: translateX(0); }
    100% { transform: translateX(20px); }
}

/* About Me Section */
.about-me-section {
    padding: var(--section-padding);
    background: var(--dark-grey);
}

.about-me-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-me-text p {
    color: var(--accent-grey);
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--primary-black);
    border-top: 1px solid var(--medium-grey);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.footer-logo-img {
    width: 30px;
    height: 30px;
    border-radius: 6px;
}

.footer-section h4 {
    color: var(--pure-white);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-section p {
    color: var(--accent-grey);
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--accent-grey);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--pure-white);
}

.footer-bottom {
    border-top: 1px solid var(--medium-grey);
    padding-top: 30px;
}

.footer-disclaimer {
    background: var(--dark-grey);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border-left: 4px solid var(--pure-white);
}

.footer-disclaimer p {
    color: var(--accent-grey);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-copyright {
    text-align: center;
}

.footer-copyright p {
    color: var(--accent-grey);
    font-size: 0.9rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: var(--z-modal);
    animation: modalFadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-content {
    background: var(--dark-grey);
    border-radius: var(--border-radius-large);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--medium-grey);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px) scale(0.9); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 1px solid var(--medium-grey);
}

.modal-header h2 {
    color: var(--pure-white);
    font-size: 1.5rem;
}

.close {
    color: var(--accent-grey);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.close:hover {
    color: var(--pure-white);
}

.modal-body {
    padding: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    color: var(--pure-white);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: var(--medium-grey);
    border: 1px solid var(--light-grey);
    border-radius: var(--border-radius);
    color: var(--pure-white);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--pure-white);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--accent-grey);
}

.auth-switch {
    text-align: center;
    margin-top: 20px;
    color: var(--accent-grey);
}

.auth-switch a {
    color: var(--pure-white);
    text-decoration: none;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Navigation - Mobile Menu */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--medium-grey);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        display: none;
        z-index: 999;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-menu.mobile-active {
        display: flex;
        max-height: 400px;
    }
    
    .nav-link {
        width: 100%;
        padding: 15px 20px;
        border-radius: var(--border-radius);
        margin-bottom: 5px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* Hero Section */
    .hero {
        height: auto;
        min-height: 100vh;
        padding: 100px 0 60px;
    }
    
    .hero-content {
        padding: 30px 20px;
        margin: 0 20px;
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
        width: 100%;
    }
    
    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
        padding: 15px 30px;
    }
    
    /* About Section */
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-stats {
        justify-content: space-around;
        gap: 20px;
    }
    
    /* Tools Section */
    .tools-section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .simple-tools-grid {
        gap: 15px;
    }
    
    .simple-tool-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
        padding: 20px 15px;
    }
    
    .tool-name {
        margin: 0;
        font-size: 1.1rem;
    }
    
    .tool-price, .tool-description {
        margin: 0;
        min-width: auto;
    }
    
    .tool-btn {
        width: 100%;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-section {
        padding: 20px 0;
        border-bottom: 1px solid var(--medium-grey);
    }
    
    .footer-section:last-child {
        border-bottom: none;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    /* Auth buttons in nav */
    .nav-auth {
        gap: 10px;
    }
    
    .auth-buttons {
        gap: 8px;
    }
    
    .btn-login, .btn-register {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    /* Container and padding adjustments */
    .nav-container {
        padding: 0 15px;
    }
    
    .hero-content {
        padding: 25px 15px;
        margin: 0 10px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    /* Navigation */
    .nav-logo {
        font-size: 1.2rem;
    }
    
    .logo-img {
        width: 35px;
        height: 35px;
    }
    
    /* Hero Section */
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
        padding: 12px 20px;
        font-size: 0.95rem;
    }
    
    /* Sections */
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
    }
    
    /* About Stats */
    .about-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .stat {
        width: 100%;
    }
    
    /* Tools */
    .simple-tool-item {
        padding: 20px 15px;
    }
    
    .tool-name {
        font-size: 1rem;
    }
    
    .tool-description {
        font-size: 0.9rem;
    }
    
    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
    }
    
    .footer-disclaimer {
        font-size: 0.85rem;
        padding: 15px;
    }
    
    /* Auth buttons */
    .btn-login, .btn-register {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

/* Animation classes for JavaScript */
.fade-in {
    animation: fadeInUp 0.6s ease both;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease both;
}

.slide-in-right {
    animation: slideInRight 0.6s ease both;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Additional utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }

.hidden { display: none; }
.visible { display: block; }