:root {
    --primary: #6366F1;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --secondary: #EC4899;
    --success: #10B981;
    --bg-gradient: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --input-bg: rgba(15, 23, 42, 0.6);
}

* { box-sizing: border-box; font-family: 'Inter', system-ui, sans-serif; -webkit-tap-highlight-color: transparent; }

body { 
    background: var(--bg-gradient); 
    color: var(--text-main); 
    margin: 0; 
    padding: 2vh 2vw; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    min-height: 100vh; 
    background-attachment: fixed;
}

.app-container { max-width: 1100px; width: 100%; display: flex; flex-direction: column; margin: auto; }

/* Frosted Glass Dashboard */
.dashboard { 
    background: var(--glass-bg); 
    backdrop-filter: blur(20px); 
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 32px; 
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); 
    display: flex; 
    overflow: hidden; 
    flex-wrap: wrap; 
    min-height: 650px; 
}

/* Sidebar Styling */
.sidebar { 
    background: rgba(0, 0, 0, 0.2); 
    width: 280px; 
    padding: 40px 20px; 
    display: flex; 
    flex-direction: column; 
    gap: 12px; 
    border-right: 1px solid var(--glass-border);
}
.sidebar h2 { margin: 0 0 24px 16px; font-size: 24px; font-weight: 800; color: #FFF; letter-spacing: 0.5px; }
.tab-btn { 
    background: transparent; 
    border: 1px solid transparent; 
    color: var(--text-muted); 
    padding: 16px 24px; 
    border-radius: 16px; 
    text-align: left; 
    font-size: 15px; 
    font-weight: 600; 
    cursor: pointer; 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    display: flex; 
    align-items: center; 
    gap: 14px; 
}
.tab-btn:hover { background: rgba(255,255,255,0.05); color: #FFF; transform: translateX(4px); }
.tab-btn.active { 
    background: var(--primary); 
    color: #FFF; 
    box-shadow: 0 10px 15px -3px var(--primary-glow); 
}
hr.divider { border: 0; height: 1px; background: var(--glass-border); margin: 16px; }

/* Main Content Area */
.main-content { padding: 40px; flex: 1; display: flex; flex-direction: column; width: 100%; overflow-x: hidden; }
h1 { margin: 0 0 8px 0; font-size: 36px; font-weight: 800; background: linear-gradient(to right, #FFF, #A5B4FC); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.jargon-box { background: rgba(245, 158, 11, 0.1); color: #FCD34D; padding: 14px 20px; border-radius: 16px; font-size: 14px; font-weight: 500; border: 1px solid rgba(245, 158, 11, 0.2); backdrop-filter: blur(10px); }

/* Inputs Layout */
.emi-layout { display: flex; gap: 40px; width: 100%; margin-top: 24px; }
.inputs-section { flex: 1.2; display: flex; flex-direction: column; gap: 20px; }
.input-row { display: flex; gap: 20px; width: 100%; }
.input-group { flex: 1; }
label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 13px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

/* Neumorphic / Glass Inputs */
input[type="number"], select { 
    width: 100%; 
    padding: 16px; 
    font-size: 18px; 
    font-weight: 600; 
    background: var(--input-bg); 
    border: 1px solid var(--glass-border); 
    border-radius: 16px; 
    color: #FFF; 
    transition: all 0.3s ease; 
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}
input:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2), inset 0 2px 4px rgba(0,0,0,0.2); background: rgba(15, 23, 42, 0.8); }

/* Advanced Details Panel */
.advanced-panel { background: rgba(0,0,0,0.2); border: 1px solid var(--glass-border); border-radius: 20px; margin-top: 8px; overflow: hidden; }
.advanced-panel summary { padding: 20px; font-weight: 600; font-size: 15px; cursor: pointer; color: #FFF; display: flex; align-items: center; }
.advanced-content { padding: 0 20px 20px 20px; border-top: 1px solid var(--glass-border); }
.advanced-content h4 { margin: 20px 0 12px 0; font-size: 13px; color: var(--primary); text-transform: uppercase; letter-spacing: 1px; }

/* The Results Card (Floating Glow) */
.results-section { 
    flex: 1; 
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.1) 0%, rgba(0,0,0,0.2) 100%); 
    border: 1px solid rgba(99, 102, 241, 0.2);
    padding: 40px; 
    border-radius: 32px; 
    text-align: center; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    position: relative;
    overflow: hidden;
}
/* Subtle background glow inside results */
.results-section::before {
    content: ''; position: absolute; top: -50px; right: -50px; width: 150px; height: 150px; background: var(--primary); filter: blur(100px); opacity: 0.3; z-index: 0;
}

.results-section > * { z-index: 1; position: relative; }
.results-section h3 { margin: 0 0 12px 0; color: var(--text-muted); font-size: 14px; text-transform: uppercase; letter-spacing: 2px; }
.emi-amount { font-size: 56px; font-weight: 800; color: #FFF; margin: 0; letter-spacing: -2px; text-shadow: 0 4px 10px rgba(0,0,0,0.3); }

/* Badges */
.savings-badge { background: linear-gradient(to right, #10B981, #059669); color: white; padding: 8px 20px; border-radius: 100px; font-size: 14px; font-weight: 700; margin-top: 16px; box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.3); animation: pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.tax-badge { background: rgba(2, 132, 199, 0.2); border: 1px solid #0284C7; color: #38BDF8; padding: 6px 16px; border-radius: 100px; font-size: 13px; font-weight: 600; margin-top: 12px; }
@keyframes pop { 0% { transform: scale(0.8); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }

/* Animated Pie Chart */
.pie-chart { width: 160px; height: 160px; border-radius: 50%; margin: 32px 0; box-shadow: 0 10px 20px rgba(0,0,0,0.5), inset 0 4px 6px rgba(255,255,255,0.2); transition: background 0.5s ease-out; border: 4px solid rgba(255,255,255,0.05); }
.chart-legend { display: flex; gap: 20px; font-size: 14px; font-weight: 600; margin-bottom: 32px; color: var(--text-main); }
.dot { width: 12px; height: 12px; border-radius: 50%; box-shadow: 0 2px 4px rgba(0,0,0,0.5); }

/* Summary Grid */
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; width: 100%; }
.summary-item { text-align: left; background: rgba(0,0,0,0.3); border: 1px solid var(--glass-border); padding: 16px; border-radius: 16px; }
.summary-item p { margin: 0; font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.summary-item h4 { margin: 8px 0 0 0; font-size: 18px; font-weight: 800; color: #FFF; }

.schedule-btn { width: 100%; margin-top: 24px; background: rgba(99, 102, 241, 0.15); color: #A5B4FC; border: 1px solid rgba(99, 102, 241, 0.3); padding: 16px; border-radius: 16px; font-weight: 700; font-size: 15px; cursor: pointer; transition: 0.3s; }
.schedule-btn:hover { background: rgba(99, 102, 241, 0.3); color: #FFF; box-shadow: 0 0 20px rgba(99, 102, 241, 0.2); }

/* Schedule Table */
.schedule-container { display: none; width: 100%; margin-top: 16px; max-height: 250px; overflow-y: auto; border-radius: 16px; border: 1px solid var(--glass-border); background: rgba(0,0,0,0.4); backdrop-filter: blur(10px); }
.schedule-table { width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; }
.schedule-table th { position: sticky; top: 0; background: rgba(15, 23, 42, 0.9); color: #FFF; padding: 16px 12px; z-index: 1; text-transform: uppercase; font-size: 12px; letter-spacing: 1px; }
.schedule-table td { padding: 14px 12px; border-bottom: 1px solid rgba(255,255,255,0.05); color: var(--text-main); }

/* Standard Calculator Tool */
.calc-view { display: none; flex-direction: column; align-items: center; width: 100%; }
.calc-wrapper { width: 100%; max-width: 400px; background: rgba(0,0,0,0.3); border: 1px solid var(--glass-border); padding: 32px; border-radius: 40px; box-shadow: 0 25px 50px rgba(0,0,0,0.5); backdrop-filter: blur(20px); }
.calc-display-area { background: rgba(15, 23, 42, 0.8); border: 1px solid var(--glass-border); border-radius: 24px; padding: 30px 24px; margin-bottom: 32px; box-shadow: inset 0 10px 20px rgba(0,0,0,0.5); }
.calc-display { width: 100%; font-size: 52px; text-align: right; overflow-x: auto; font-weight: 800; color: #FFF; letter-spacing: -2px; }

.calc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.calc-btn { border: none; border-radius: 20px; font-size: 26px; font-weight: 600; cursor: pointer; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); aspect-ratio: 1/1; display: flex; align-items: center; justify-content: center; }
.calc-btn:active { transform: scale(0.9); }

.calc-btn.num { background: rgba(255,255,255,0.05); color: #FFF; border: 1px solid rgba(255,255,255,0.05); }
.calc-btn.num:hover { background: rgba(255,255,255,0.1); }
.calc-btn.zero { grid-column: span 2; aspect-ratio: auto; justify-content: flex-start; padding-left: 36px; }

.calc-btn.op-secondary { background: rgba(255,255,255,0.1); color: var(--secondary); }
.calc-btn.op-primary { background: var(--primary); color: #FFF; box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3); font-size: 32px; }
.calc-btn.eval { background: linear-gradient(135deg, #10B981 0%, #059669 100%); color: #fff; font-size: 32px; box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3); }
.calc-btn.clear { background: rgba(239, 68, 68, 0.15); color: #F87171; font-size: 22px; }

/* Info Pages & Misc */
.info-view { display: none; width: 100%; max-width: 700px; margin: 0 auto; line-height: 1.8; color: var(--text-muted); }
.info-view h1 { color: #FFF; margin-bottom: 24px; }
.info-view strong { color: var(--text-main); }
.info-view a { color: var(--primary); text-decoration: none; font-weight: 700; }

.custom-footer { text-align: center; padding: 24px; color: var(--text-muted); font-size: 14px; font-weight: 500; margin-top: 20px; letter-spacing: 1px; text-transform: uppercase; }

/* Mobile Responsiveness */
@media (max-width: 850px) {
    body { padding: 0; background-attachment: scroll; }
    .dashboard { border-radius: 0; min-height: 100vh; border: none; }
    .sidebar { width: 100%; flex-direction: row; overflow-x: auto; padding: 20px; border-right: none; border-bottom: 1px solid var(--glass-border); background: rgba(15, 23, 42, 0.9); backdrop-filter: blur(20px); position: sticky; top: 0; z-index: 50; }
    .sidebar h2 { display: none; }
    .tab-btn { padding: 12px 20px; white-space: nowrap; font-size: 14px; border-radius: 12px; }
    .emi-layout { flex-direction: column; gap: 32px; }
    .input-row { flex-direction: column; gap: 20px; }
    .main-content { padding: 24px; }
    .calc-wrapper { padding: 20px; border-radius: 32px; }
    .calc-btn { border-radius: 16px; }
}