/* Premium Base Styles */

/* Import Premium Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;900&family=Poppins:wght@300;400;500;600;700;900&display=swap');

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--charcoal);
    background: var(--off-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Premium Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: var(--fw-bold);
    line-height: 1.2;
    color: var(--black);
    margin-bottom: var(--space-md);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); font-weight: var(--fw-black); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); font-weight: var(--fw-bold); }
h3 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 2rem); }
h5 { font-size: clamp(1.125rem, 2vw, 1.5rem); }
h6 { font-size: clamp(1rem, 1.5vw, 1.25rem); }

p {
    margin-bottom: var(--space-md);
    color: var(--charcoal);
    font-weight: var(--fw-regular);
}

.lead {
    font-size: 1.25rem;
    font-weight: var(--fw-medium);
    color: var(--charcoal);
    line-height: 1.6;
}

/* Premium Links */
a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: all var(--transition-base);
}

a:hover {
    color: var(--primary-light);
}

/* Premium Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1e5a9e 0%, #4da3e8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Premium Scroll Indicator */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform-origin: left;
    transform: scaleX(0);
    z-index: var(--z-tooltip);
    box-shadow: 0 2px 8px rgba(30, 90, 158, 0.3);
}

/* Premium Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

/* Fade In Utility */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Animation Utilities */
.animate-fadeInUp {
    animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fadeInDown {
    animation: fadeInDown 0.8s ease-out forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease-out forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 0.8s ease-out forwards;
}

.animate-scaleIn {
    animation: scaleIn 0.6s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Delay Utilities */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* Premium Container */
.container-premium {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Section Spacing */
.section-padding {
    padding: var(--space-3xl) 0;
}

/* Premium Backgrounds */
.bg-gradient-blue {
    background: var(--primary-gradient);
    color: var(--white);
}

.bg-gradient-gold {
    background: var(--accent-gradient);
    color: var(--white);
}

.bg-pattern {
    position: relative;
    overflow: hidden;
}

.bg-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(77, 163, 232, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(30, 90, 158, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Parallax Effect */
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Premium Scroll Animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 80px;
    }

    body {
        font-size: 15px;
    }

    .parallax {
        background-attachment: scroll;
    }

    .container-premium {
        padding: 0 var(--space-md);
    }

    .section-padding {
        padding: var(--space-2xl) 0;
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    a:active {
        opacity: 0.8;
    }
}

/* Print Optimizations */
@media print {
    .loading-spinner,
    .scroll-indicator {
        display: none !important;
    }
}