/* Design System 2026 - Telecom Redesign */
:root {
    /* Color Palette - Premium White/Light */
    --primary-cyan: #0891b2;
    --secondary-blue: #0e7490;
    --dark-bg: #f8fafc;
    --deep-bg: #ffffff;
    --accent-gradient: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.08);
    --accent-glow: 0 10px 30px rgba(8, 145, 178, 0.2);
    --card-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

body {
    background-color: var(--deep-bg);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;
}

/* Glassmorphism Classes */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
}

.glass-card {
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08);
    border-color: rgba(8, 145, 178, 0.2);
}

/* Buttons */
.btn-premium {
    background: var(--accent-gradient);
    color: white !important;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 700;
    border: none;
    box-shadow: var(--accent-glow);
    transition: 0.3s;
    display: inline-block;
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(8, 145, 178, 0.3);
}

.btn-premium-outline {
    background: transparent;
    color: var(--primary-cyan) !important;
    padding: 12px 30px;
    border-radius: 12px;
    font-weight: 700;
    border: 2px solid var(--primary-cyan);
    transition: 0.3s;
    display: inline-block;
}

.btn-premium-outline:hover {
    background: rgba(8, 145, 178, 0.05);
    transform: translateY(-2px);
}

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

.animate-fade-up {
    animation: fadeUp 0.8s ease-out forwards;
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* Typography Enhancements */
.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
}

/* Navigation Customization */
.nav-glass {
    background: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 15px 0;
}