/* ================================================== */
/* BASE.CSS — Reset, Typography, Utilities, Animations */
/* ================================================== */

/* ── Reset ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

* {
    font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Body ── */
body {
    background-color: var(--bg-color);
    background-image:
        var(--mesh-gradient-1),
        var(--mesh-gradient-2),
        var(--mesh-gradient-3),
        var(--mesh-gradient-4),
        var(--mesh-gradient-5);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

/* ── Selection ── */
::selection {
    background: rgba(168, 85, 247, 0.3);
    color: #ffffff;
}
::-moz-selection {
    background: rgba(168, 85, 247, 0.3);
    color: #ffffff;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 100px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ── Focus ── */
:focus-visible {
    outline: 2px solid var(--accent-purple);
    outline-offset: 2px;
}

/* ── Links ── */
a {
    color: inherit;
    text-decoration: none;
}

/* ── Buttons ── */
.btn {
    background: var(--glass-bg-light);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.65rem 1.4rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    white-space: nowrap;
    user-select: none;
}

.btn:hover {
    background: var(--glass-bg-strong);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--accent-gradient);
    border: none;
    color: #ffffff;
    box-shadow: var(--shadow-glow-purple);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow-purple-strong);
    background: var(--accent-gradient-vibrant);
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--accent-red-dim) !important;
    border-color: rgba(239, 68, 68, 0.3) !important;
    color: var(--accent-red) !important;
}

.btn-danger:hover {
    background: var(--accent-red) !important;
    color: white !important;
    box-shadow: var(--shadow-glow-red);
}

/* ── Utility Classes ── */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
}

/* View transitions */
.view-hidden {
    display: none !important;
}

/* ── Animations ── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes floatSoft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(168, 85, 247, 0.4), 0 0 16px rgba(168, 85, 247, 0.1); }
    50% { box-shadow: 0 0 16px rgba(168, 85, 247, 0.7), 0 0 32px rgba(168, 85, 247, 0.2); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}