/* Explain: Base reset, typography, scroll reveal animations, button hover effects, and global utility styles. - */
* {
    box-sizing: border-box;
}

html {
    background: var(--background-color);
    color: var(--text-color);
    scroll-padding-top: 2rem;
}

body {
    margin: 0;
    overflow-x: hidden;
    background: var(--background-color);
}

img {
    display: block;
    max-width: 100%;
}

::selection {
    background: var(--primary-color);
    color: #ffffff;
}

button,
a,
input {
    -webkit-tap-highlight-color: transparent;
}

@media (max-width: 480px) {
    body.has-mobile-panel,
    body.has-menu-modal {
        overflow: hidden;
    }
}

/* Formal Corporate Utilities */
.glass-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.04);
}

.glass-card-dark {
    background: var(--slate-color);
    border: 1px solid #334155;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.hover-lift {
    transition: transform 0.25s ease-out, box-shadow 0.25s ease-out, border-color 0.25s ease-out;
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px -8px rgba(15, 23, 42, 0.12);
    border-color: var(--primary-color);
}

.text-gradient {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), #2563eb);
}

.btn-glow {
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    transition: all 0.25s ease;
}

.btn-glow:hover {
    box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
    transform: translateY(-1px);
}

/* Scroll Reveal Animations */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.2, 0, 0, 1);
}
.reveal-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-100 { transition-delay: 100ms; }
.reveal-delay-200 { transition-delay: 200ms; }
.reveal-delay-300 { transition-delay: 300ms; }

/* Enforce formal button shapes (Sharper corners instead of full rounded) */
.btn, .rh-btn, .rs-btn, .rfc-main, .rfc-second, .re-entry-btn, .rc-submit {
    border-radius: 0.5rem !important; /* 8px border radius for professional look */
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease !important;
}

.btn:hover, .rh-btn:hover, .rs-btn:hover, .rfc-main:hover, .rfc-second:hover, .re-entry-btn:hover, .rc-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 15px -4px rgba(15, 23, 42, 0.15);
}

.btn:active, .rh-btn:active, .rs-btn:active, .rfc-main:active, .rfc-second:active, .re-entry-btn:active, .rc-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.1);
}

/* Corporate inputs */
.input, .select, .textarea {
    border-radius: 0.5rem !important;
}