@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');
@import url('https://cdn.jsdelivr.net/npm/remixicon@2.5.0/fonts/remixicon.css');

:root {
    --virexa-void: #0B0E1A;
    --virexa-deep: #131829;
    --virexa-surface: #1B2140;
    --virexa-primary: #7B2FF7;
    --virexa-primary-light: #9D5CFF;
    --virexa-accent: #00E5C7;
    --virexa-accent-light: #4DFFEA;
    --virexa-pulse: #FF3D8A;
    --virexa-text-light: #E8EAF6;
    --virexa-text-muted: #9CA3C4;
    --virexa-border: #2A3159;
    --virexa-gradient: linear-gradient(135deg, var(--virexa-primary) 0%, var(--virexa-accent) 100%);
    --virexa-gradient-dark: linear-gradient(135deg, #1B2140 0%, #0B0E1A 100%);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--virexa-void);
    color: var(--virexa-text-light);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--virexa-void);
}
::-webkit-scrollbar-thumb {
    background: var(--virexa-gradient);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--virexa-primary-light);
}

/* Sticky Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--virexa-deep);
    border-bottom: 1px solid var(--virexa-border);
    box-shadow: 0 4px 30px rgba(123, 47, 247, 0.15);
    transition: all 0.3s ease;
}

.logo-glow {
    filter: drop-shadow(0 0 8px rgba(0, 229, 199, 0.5));
    transition: filter 0.3s ease;
}
.logo-glow:hover {
    filter: drop-shadow(0 0 16px rgba(0, 229, 199, 0.8));
}

.nav-link {
    position: relative;
    color: var(--virexa-text-light);
    transition: color 0.3s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--virexa-gradient);
    transition: width 0.3s ease;
}
.nav-link:hover {
    color: var(--virexa-accent-light);
}
.nav-link:hover::after {
    width: 100%;
}
.nav-link.active {
    color: var(--virexa-accent);
}
.nav-link.active::after {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu {
    background-color: var(--virexa-deep);
    border-top: 1px solid var(--virexa-border);
}

.mobile-menu-toggle {
    color: var(--virexa-text-light);
    font-size: 1.75rem;
    cursor: pointer;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: var(--virexa-gradient);
    color: #FFFFFF;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(123, 47, 247, 0.4);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 229, 199, 0.5);
    filter: brightness(1.1);
}
.btn-primary:active {
    transform: translateY(-1px);
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--virexa-accent);
    padding: 0.8rem 1.95rem;
    border-radius: 8px;
    font-weight: 600;
    border: 2px solid var(--virexa-accent);
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-outline:hover {
    background: var(--virexa-accent);
    color: var(--virexa-void);
    box-shadow: 0 0 25px rgba(0, 229, 199, 0.4);
}

.btn-pulse {
    display: inline-block;
    background: var(--virexa-pulse);
    color: #FFFFFF;
    padding: 0.85rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(255, 61, 138, 0.4);
    transition: all 0.3s ease;
}
.btn-pulse:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 28px rgba(255, 61, 138, 0.6);
}

/* Cards */
.tech-card {
    background: var(--virexa-surface);
    border: 1px solid var(--virexa-border);
    border-radius: 14px;
    padding: 2rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}
.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--virexa-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.tech-card:hover {
    border-color: var(--virexa-primary);
    box-shadow: 0 12px 40px rgba(123, 47, 247, 0.25);
    transform: translateY(-6px);
}
.tech-card:hover::before {
    transform: scaleX(1);
}

.tech-card-static {
    background: var(--virexa-surface);
    border: 1px solid var(--virexa-border);
    border-radius: 14px;
    padding: 2rem;
    cursor: default;
}

.icon-box {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: var(--virexa-gradient-dark);
    border: 1px solid var(--virexa-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--virexa-accent);
    margin-bottom: 1.25rem;
}

/* Grid Layout Helpers */
.grid-tech {
    display: grid;
    gap: 1.75rem;
}

/* Forms */
.form-input {
    width: 100%;
    background-color: var(--virexa-surface);
    border: 1px solid var(--virexa-border);
    border-radius: 8px;
    padding: 0.85rem 1.1rem;
    color: var(--virexa-text-light);
    transition: all 0.3s ease;
}
.form-input::placeholder {
    color: var(--virexa-text-muted);
}
.form-input:focus {
    outline: none;
    border-color: var(--virexa-accent);
    box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.15);
}

.form-label {
    display: block;
    color: var(--virexa-text-light);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
}

textarea.form-input {
    resize: vertical;
    min-height: 140px;
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--virexa-border);
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
    background: var(--virexa-surface);
}
.accordion-header {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--virexa-text-light);
    transition: background 0.3s ease;
}
.accordion-header:hover {
    background: rgba(123, 47, 247, 0.1);
}
.accordion-header i {
    color: var(--virexa-accent);
    transition: transform 0.3s ease;
}
.accordion-header.active i {
    transform: rotate(180deg);
}
.accordion-content {
    display: none;
    padding: 0 1.5rem 1.5rem;
    color: var(--virexa-text-muted);
    line-height: 1.7;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--virexa-deep);
    border-top: 1px solid var(--virexa-border);
    box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.4);
    z-index: 200;
    padding: 1.5rem;
}
.cookie-banner h3 {
    color: #FFFFFF;
}
.cookie-banner p {
    color: #C4C9E0;
}
.cookie-banner a {
    color: #4DFFEA;
    text-decoration: underline;
}

/* Loading Spinner */
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--virexa-border);
    border-top-color: var(--virexa-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Section Backgrounds */
.section-dark {
    background-color: var(--virexa-void);
}
.section-surface {
    background-color: var(--virexa-deep);
}
.section-gradient {
    background: var(--virexa-gradient-dark);
}

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

.hex-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(123, 47, 247, 0.15);
    border: 1px solid var(--virexa-primary);
    color: var(--virexa-primary-light);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Fade-in Animation */
.fade-in-up {
    animation: fadeInUp 0.7s ease forwards;
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Divider */
.tech-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--virexa-border), transparent);
    margin: 3rem 0;
}

/* Badge Popular */
.badge-popular {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--virexa-pulse);
    color: #FFFFFF;
    padding: 0.35rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(255, 61, 138, 0.4);
}

/* Timeline */
.timeline-item {
    position: relative;
    padding-left: 2.5rem;
    border-left: 2px solid var(--virexa-border);
    padding-bottom: 2.5rem;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--virexa-accent);
    box-shadow: 0 0 12px rgba(0, 229, 199, 0.6);
}

/* Responsive */
@media (max-width: 768px) {
    .tech-card {
        padding: 1.5rem;
    }
    .btn-primary, .btn-outline, .btn-pulse {
        width: 100%;
        text-align: center;
    }
}