html {
    scroll-padding-top: calc(4.5rem + env(safe-area-inset-top, 0px));
    -webkit-text-size-adjust: 100%;
}

:root {
    color-scheme: light;
    --page-bg: #f0f4f8;
    --page-text: #334155;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-border: rgba(59, 130, 246, 0.1);
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(59, 130, 246, 0.15);
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
    --primary-blue: #3b82f6;
    --primary-blue-hover: #2563eb;
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-light: #64748b;
}

* {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--page-bg);
    background-attachment: fixed;
    color: var(--page-text);
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0;
    overflow-x: hidden;
    line-height: 1.6;
    padding-left: env(safe-area-inset-left, 0px);
    padding-right: env(safe-area-inset-right, 0px);
}

.nav-surface {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
    backdrop-filter: blur(20px) saturate(180%);
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
    border-radius: 1.25rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (hover: hover) and (pointer: fine) {
    .glass-card:hover {
        transform: translateY(-4px);
        border-color: rgba(59, 130, 246, 0.3);
        box-shadow: 0 15px 40px -10px rgba(59, 130, 246, 0.15);
    }
}

/* Cards: no hover lift on touch devices */
.welcome-card-touch {
    transform: none;
}

@media (hover: hover) and (pointer: fine) {
    .welcome-card-touch:hover {
        transform: translateY(-4px);
    }
}

.animate-pulse-soft {
    animation: pulse-soft 4s ease-in-out infinite;
}

@keyframes pulse-soft {
    0%, 100% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.3;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 15px -5px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
}

@media (hover: hover) and (pointer: fine) {
    .btn-primary:hover {
        background: var(--primary-blue-hover);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px -5px rgba(59, 130, 246, 0.5);
    }
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    transition: all 0.3s ease;
}

@media (hover: hover) and (pointer: fine) {
    .btn-secondary:hover {
        background: var(--primary-blue);
        color: white;
        transform: translateY(-2px);
    }
}

.gradient-text {
    color: var(--primary-blue);
}

.section-padding {
    padding: 3.5rem 0.75rem;
}

@media (min-width: 640px) {
    .section-padding {
        padding: 5rem 1rem;
    }
}

@media (min-width: 1024px) {
    .section-padding {
        padding: 7rem 2rem;
    }
}

/* First section: clear fixed nav + status bar / notch */
#home.section-padding {
    padding-top: max(5.5rem, calc(env(safe-area-inset-top, 0px) + 5rem));
    padding-bottom: 3.5rem;
}

@media (min-width: 640px) {
    #home.section-padding {
        padding-top: max(6rem, calc(env(safe-area-inset-top, 0px) + 5.5rem));
        padding-bottom: 4rem;
    }
}

@media (min-width: 1024px) {
    #home.section-padding {
        padding-top: max(6.5rem, calc(env(safe-area-inset-top, 0px) + 6rem));
        padding-bottom: 5rem;
    }
}

.stat-card {
    transition: all 0.3s ease;
}

@media (hover: hover) and (pointer: fine) {
    .stat-card:hover {
        transform: translateY(-3px) scale(1.02);
    }
}

.nav-link {
    position: relative;
    transition: color 0.3s ease;
    color: var(--text-dark);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: var(--primary-blue);
}