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

:root {
    --altsur-primary: #0A84FF;
    --altsur-primary-light: #64B5F6;
    --altsur-primary-dark: #0056B3;
    --altsur-secondary: #1C1C1E;
    --altsur-accent: #FF6B35;
    --altsur-success: #30D158;
    --altsur-text-primary: #1D1D1F;
    --altsur-text-secondary: #6E6E73;
    --altsur-text-tertiary: #8E8E93;
    --altsur-text-light: #FFFFFF;
    --altsur-bg-primary: #FFFFFF;
    --altsur-bg-secondary: #F2F2F7;
    --altsur-bg-tertiary: #F8F8F8;
    --altsur-bg-dark: #1C1C1E;
    --altsur-border: #D1D1D6;
    --altsur-border-light: #E5E5EA;
    --altsur-gradient-blue: linear-gradient(135deg, #0A84FF 0%, #64B5F6 100%);
    --altsur-gradient-dark: linear-gradient(135deg, #1C1C1E 0%, #2C2C2E 100%);
    --altsur-gradient-text: linear-gradient(135deg, #0A84FF 0%, #64B5F6 100%);
    --altsur-shadow-light: 0 1px 3px rgba(0, 0, 0, 0.12);
    --altsur-shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.15);
    --altsur-shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.18);
    --altsur-radius-small: 8px;
    --altsur-radius-medium: 12px;
    --altsur-radius-large: 16px;
    --altsur-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Third-party icon library custom styles */
.altsur-icon {
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    line-height: 1;
}

.altsur-icon-lg {
    font-size: 1.5em;
}

.altsur-icon-xl {
    font-size: 2em;
}

.altsur-icon-2x {
    font-size: 2em;
}

.altsur-icon-3x {
    font-size: 3em;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
    line-height: 1.6;
    color: var(--altsur-text-primary);
    background-color: var(--altsur-bg-primary);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.altsur-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--altsur-border-light);
    z-index: 1000;
    transition: var(--altsur-transition);
}

.altsur-header.altsur-scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--altsur-shadow-light);
}

.altsur-nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    height: 72px;
    max-width: 1400px;
    margin: 0 auto;
}

.altsur-company-logo {
    width: 240px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-shrink: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
    text-decoration: none;
    position: relative;
    transition: var(--altsur-transition);
}

.altsur-company-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #0A84FF 0%, #007AFF 50%, #5856D6 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    position: relative;
    box-shadow: 0 4px 12px rgba(10, 132, 255, 0.2);
}

.altsur-company-logo .logo-icon::before {
    content: "A";
    color: white;
    font-size: 20px;
    font-weight: 900;
    line-height: 1;
}

.altsur-company-logo:hover {
    transform: translateY(-1px);
}

.altsur-company-logo:hover .logo-icon {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(10, 132, 255, 0.3);
}

.altsur-company-logo .logo-icon {
    transition: var(--altsur-transition);
}

.altsur-company-logo .logo-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.altsur-company-logo .logo-text::before {
    content: "ALTSUR";
    font-size: 26px;
    font-weight: 900;
    background: linear-gradient(135deg, #0A84FF 0%, #007AFF 50%, #5856D6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(10, 132, 255, 0.1));
}

.altsur-company-logo .logo-text::after {
    content: "TECHNOLOGY";
    font-size: 10px;
    font-weight: 500;
    color: var(--altsur-text-secondary);
    letter-spacing: 2.5px;
    text-transform: uppercase;
    opacity: 0.8;
    margin-top: 2px;
}

.altsur-nav-menu {
    display: flex;
    align-items: center;
    gap: 48px;
}

.altsur-nav-menu > a,
.altsur-dropdown > a {
    text-decoration: none;
    color: var(--altsur-text-primary);
    font-weight: 500;
    font-size: 16px;
    transition: var(--altsur-transition);
    position: relative;
    padding: 8px 0;
}

.altsur-nav-menu > a:hover,
.altsur-dropdown > a:hover,
.altsur-nav-active {
    color: var(--altsur-primary);
}

.altsur-nav-active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--altsur-gradient-blue);
    border-radius: 1px;
}

.altsur-dropdown {
    position: relative;
}

.altsur-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: var(--altsur-bg-primary);
    border: 1px solid var(--altsur-border-light);
    border-radius: var(--altsur-radius-medium);
    padding: 12px 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--altsur-transition);
    box-shadow: var(--altsur-shadow-medium);
}

.altsur-dropdown:hover .altsur-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.altsur-dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--altsur-text-primary);
    text-decoration: none;
    font-size: 15px;
    transition: var(--altsur-transition);
}

.altsur-dropdown-menu a:hover {
    background: var(--altsur-bg-secondary);
    color: var(--altsur-primary);
}

.altsur-mobile-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    gap: 4px;
}

.altsur-mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--altsur-text-primary);
    transition: var(--altsur-transition);
}

.altsur-mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--altsur-bg-primary);
    border-bottom: 1px solid var(--altsur-border-light);
    padding: 24px 40px;
    flex-direction: column;
    gap: 16px;
}

.altsur-mobile-menu a {
    text-decoration: none;
    color: var(--altsur-text-primary);
    font-weight: 500;
    padding: 12px 0;
    border-bottom: 1px solid var(--altsur-border-light);
}

.altsur-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    background: var(--altsur-gradient-blue);
    color: var(--altsur-text-light);
    text-decoration: none;
    border-radius: var(--altsur-radius-medium);
    font-weight: 600;
    font-size: 16px;
    transition: var(--altsur-transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(10, 132, 255, 0.3);
}

.altsur-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(10, 132, 255, 0.4);
}

.altsur-btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    background: transparent;
    color: var(--altsur-text-primary);
    text-decoration: none;
    border: 2px solid var(--altsur-border);
    border-radius: var(--altsur-radius-medium);
    font-weight: 600;
    font-size: 16px;
    transition: var(--altsur-transition);
}

.altsur-btn-outline:hover {
    border-color: var(--altsur-primary);
    color: var(--altsur-primary);
    transform: translateY(-2px);
}

.altsur-btn-large {
    padding: 20px 40px;
    font-size: 18px;
}

.altsur-section-badge {
    display: inline-block;
    background: var(--altsur-bg-secondary);
    color: var(--altsur-primary);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
    border: 1px solid var(--altsur-border-light);
}

.altsur-badge-text {
    font-size: 14px;
    font-weight: 600;
}

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

.altsur-footer {
    background: var(--altsur-bg-dark);
    color: var(--altsur-text-light);
}

.altsur-footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.altsur-footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    padding: 80px 0 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.altsur-footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin: 20px 0 0;
}

.altsur-footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.altsur-footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--altsur-text-light);
}

.altsur-footer-section a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--altsur-transition);
}

.altsur-footer-section a:hover {
    color: var(--altsur-primary-light);
}

.altsur-footer-address {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
    display: block;
    margin-top: 16px;
}

.altsur-footer-bottom {
    padding: 32px 0;
}

.altsur-footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.altsur-footer-bottom span {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.altsur-footer-legal {
    display: flex;
    gap: 24px;
}

.altsur-footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: var(--altsur-transition);
}

.altsur-footer-legal a:hover {
    color: var(--altsur-primary-light);
}

.altsur-cookie-modal {
    position: fixed;
    bottom: 32px;
    right: 32px;
    max-width: 400px;
    background: var(--altsur-bg-primary);
    border: 1px solid var(--altsur-border-light);
    border-radius: var(--altsur-radius-large);
    box-shadow: var(--altsur-shadow-heavy);
    z-index: 10000;
    padding: 24px;
}

.altsur-cookie-content h3 {
    color: var(--altsur-text-primary);
    margin-bottom: 12px;
    font-size: 16px;
    font-weight: 600;
}

.altsur-cookie-content p {
    color: var(--altsur-text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 20px;
}

.altsur-cookie-buttons {
    display: flex;
    gap: 12px;
}

.altsur-cookie-buttons button {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: var(--altsur-radius-small);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: var(--altsur-transition);
}

.altsur-cookie-accept {
    background: var(--altsur-primary);
    color: var(--altsur-text-light);
}

.altsur-cookie-accept:hover {
    background: var(--altsur-primary-dark);
}

.altsur-cookie-decline {
    background: var(--altsur-bg-secondary);
    color: var(--altsur-text-primary);
    border: 1px solid var(--altsur-border-light);
}

.altsur-cookie-decline:hover {
    background: var(--altsur-border-light);
}

@media (max-width: 1024px) {
    .altsur-footer-main {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .altsur-footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .altsur-nav-menu {
        display: none;
    }
    
    .altsur-mobile-toggle {
        display: flex;
    }
    
    .altsur-mobile-menu.altsur-active {
        display: flex;
    }
    
    .altsur-nav-container,
    .altsur-footer-container {
        padding: 0 24px;
    }
    
    .altsur-footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .altsur-footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .altsur-cookie-modal {
        bottom: 16px;
        right: 16px;
        left: 16px;
        max-width: none;
    }
}