/* Premium Vanilla CSS Design System */
:root {
    --bg-canvas: hsl(222, 28%, 8%);
    --bg-panel: hsla(222, 22%, 12%, 0.7);
    --bg-panel-hover: hsla(222, 22%, 16%, 0.85);

    --color-primary: hsl(172, 85%, 45%);
    --color-primary-glow: hsla(172, 85%, 45%, 0.15);

    --color-success: hsl(148, 75%, 46%);
    --color-success-glow: hsla(148, 75%, 46%, 0.15);

    --color-danger: hsl(4, 82%, 58%);
    --color-danger-glow: hsla(4, 82%, 58%, 0.15);

    --color-warning: hsl(36, 92%, 53%);
    --color-warning-glow: hsla(36, 92%, 53%, 0.15);

    --color-info: hsl(208, 90%, 55%);

    --text-main: hsl(210, 20%, 96%);
    --text-muted: hsl(215, 14%, 68%);
    --border-glass: hsla(210, 20%, 100%, 0.07);
    --border-glass-focus: hsla(172, 85%, 45%, 0.4);

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Outfit', sans-serif;

    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --bg-card: hsla(222, 22%, 12%, 0.7);
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }

body.finance-app-container {
    background-color: var(--bg-canvas) !important;
    color: var(--text-main) !important;
    font-family: var(--font-sans) !important;
    background-image: radial-gradient(circle at 10% 20%, hsla(172, 85%, 45%, 0.05) 0%, transparent 40%),
                      radial-gradient(circle at 90% 80%, hsla(4, 82%, 58%, 0.03) 0%, transparent 40%);
    background-attachment: fixed;
}

/* Text */
.premium-font-display { font-family: var(--font-display); }

/* Glassmorphism Cards */
.premium-card {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 1.25rem;
    padding: 1.5rem;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    transition: var(--transition-smooth);
}
.premium-card:hover {
    transform: translateY(-4px);
    border-color: hsla(210, 20%, 100%, 0.15);
    background: var(--bg-panel-hover);
    box-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.7);
}

/* Metric values */
.metric-value {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--text-main) 30%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.metric-value.positive {
    background: linear-gradient(135deg, hsl(148, 85%, 60%) 0%, var(--color-success) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.metric-value.negative {
    background: linear-gradient(135deg, hsl(4, 90%, 65%) 0%, var(--color-danger) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Badges */
.custom-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
}

/* Form inputs */
.custom-input {
    background: hsla(222, 22%, 8%, 0.5) !important;
    border: 1px solid var(--border-glass) !important;
    color: var(--text-main) !important;
    border-radius: 0.75rem !important;
    padding: 0.65rem 1rem !important;
    font-family: var(--font-sans) !important;
    transition: var(--transition-smooth) !important;
}
.custom-input:focus {
    outline: none !important;
    border-color: var(--border-glass-focus) !important;
    box-shadow: 0 0 0 3px var(--color-primary-glow) !important;
    background: hsla(222, 22%, 8%, 0.8) !important;
}

/* Buttons */
.custom-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.65rem 1.25rem;
    border-radius: 0.75rem;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
}
.custom-btn-primary {
    background: linear-gradient(135deg, hsl(172, 85%, 45%) 0%, hsl(172, 85%, 35%) 100%);
    color: hsl(222, 28%, 5%);
    box-shadow: 0 4px 15px -3px hsla(172, 85%, 45%, 0.3);
}
.custom-btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 20px -3px hsla(172, 85%, 45%, 0.5);
    background: linear-gradient(135deg, hsl(172, 85%, 50%) 0%, hsl(172, 85%, 40%) 100%);
}
.custom-btn-secondary {
    background: var(--bg-panel);
    border-color: var(--border-glass);
    color: var(--text-main);
}
.custom-btn-secondary:hover {
    background: var(--bg-panel-hover);
    border-color: hsla(210, 20%, 100%, 0.2);
}
.custom-btn-danger {
    background: linear-gradient(135deg, hsl(4, 82%, 58%) 0%, hsl(4, 82%, 45%) 100%);
    color: #fff;
    box-shadow: 0 4px 15px -3px hsla(4, 82%, 58%, 0.3);
}
.custom-btn-danger:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 20px -3px hsla(4, 82%, 58%, 0.5);
}

/* Progress bars */
.budget-progress-container {
    width: 100%;
    background: hsla(222, 22%, 8%, 0.8);
    height: 0.5rem;
    border-radius: 9999px;
    overflow: hidden;
    margin-top: 0.5rem;
}
.budget-progress-bar {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Glow utilities */
.glass-glow-teal {
    background: var(--color-primary-glow);
    color: var(--color-primary);
    border-color: hsla(172, 85%, 45%, 0.2);
}
.glass-glow-emerald {
    background: var(--color-success-glow);
    color: var(--color-success);
    border-color: hsla(148, 75%, 46%, 0.2);
}
.glass-glow-coral {
    background: var(--color-danger-glow);
    color: var(--color-danger);
    border-color: hsla(4, 82%, 58%, 0.2);
}
.glass-glow-amber {
    background: var(--color-warning-glow);
    color: var(--color-warning);
    border-color: hsla(36, 92%, 53%, 0.2);
}

/* Scrollbars */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-canvas); }
::-webkit-scrollbar-thumb { background: hsla(210, 20%, 100%, 0.15); border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: hsla(172, 85%, 45%, 0.5); }

/* Tables */
.premium-table-container { overflow-x: auto; width: 100%; }
.premium-table { width: 100%; border-collapse: collapse; text-align: left; }
.premium-table th {
    padding: 1rem;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-glass);
}
.premium-table td {
    padding: 1rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
}
.premium-table tbody tr:hover td { background: hsla(222, 22%, 16%, 0.3); }

/* Hover row */
.hover-item-row { transition: var(--transition-smooth); }
.hover-item-row:hover { transform: translateX(4px); }