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

:root {
    /* Deep dark premium background */
    --bg-primary: #0a0a0f;
    --bg-sidebar: rgba(255, 255, 255, 0.02);
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-border: rgba(255, 255, 255, 0.05);
    --bg-input: rgba(255, 255, 255, 0.04);
    --bg-input-focus: rgba(255, 255, 255, 0.08);
    --bg-hover: rgba(255, 255, 255, 0.06);

    /* Typography */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-placeholder: #475569;

    /* Vibrant Accents */
    --accent: #8b5cf6;
    --accent-hover: #a78bfa;
    --accent-glow: rgba(139, 92, 246, 0.4);
    --accent-secondary: #ec4899;

    /* Status Colors */
    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;

    /* Spatial */
    --radius-sm: 10px;
    --radius-md: 16px;
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* ===== Light Theme ===== */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-sidebar: rgba(255, 255, 255, 0.7);
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-border: rgba(0, 0, 0, 0.08);
    --bg-input: rgba(0, 0, 0, 0.03);
    --bg-input-focus: rgba(0, 0, 0, 0.06);
    --bg-hover: rgba(0, 0, 0, 0.05);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-placeholder: #94a3b8;
    --accent: #4F46E5;
    --accent-hover: #4338CA;
    --accent-glow: rgba(79, 70, 229, 0.3);
    --accent-secondary: #d946ef;
    
    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    transition: background 0.4s ease, color 0.4s ease;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUpCard {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDownAlert {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRow {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes admin-ripple {
    to { transform: scale(4); opacity: 0; }
}

.ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: admin-ripple 0.6s linear;
    background-color: rgba(255, 255, 255, 0.3);
    pointer-events: none;
    left: 50%;
    top: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
}

.ripple-host {
    position: relative;
    overflow: hidden;
}
