/* =========================================================
   Light/White Theme - Investment & FD Calculator Styles
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --bg-main: #f8fafc;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    
    --primary-green: #10b981;
    --primary-green-dark: #059669;
    --primary-blue: #2563eb;
    --primary-dark: #0f172a;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --shadow-hover: 0 20px 35px -10px rgba(16, 185, 129, 0.15), 0 10px 15px -5px rgba(37, 99, 235, 0.1);
    
    --accent-gradient: linear-gradient(135deg, #10b981 0%, #059669 50%, #2563eb 100%);
    --bg-gradient: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.08) 0%, rgba(37, 99, 235, 0.05) 35%, rgba(248, 250, 252, 1) 70%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
    background-color: var(--bg-main);
    background-image: 
        var(--bg-gradient),
        linear-gradient(rgba(226, 232, 240, 0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(226, 232, 240, 0.5) 1px, transparent 1px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    background-position: 0 0, -1px -1px, -1px -1px;
    color: var(--text-primary);
    line-height: 1.6;
    padding: 30px 20px;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Background Animated Asset Glow Blobs */
body::before, body::after {
    content: '';
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    filter: blur(90px);
    z-index: -1;
    opacity: 0.6;
    animation: floatGlow 10s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
}

body::before {
    top: -50px;
    right: -50px;
    background: rgba(16, 185, 129, 0.2);
}

body::after {
    top: 400px;
    left: -100px;
    background: rgba(37, 99, 235, 0.15);
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    animation: pageFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Back Button */
.top-nav {
    margin-bottom: 30px;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: #ffffff;
    color: var(--primary-dark);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.back-btn:hover {
    transform: translateY(-3px) scale(1.02);
    border-color: var(--primary-green);
    color: var(--primary-green);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.12);
}

.back-btn .btn-icon {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.back-btn:hover .btn-icon {
    transform: translateX(-5px);
}

/* Main Header */
.main-header {
    text-align: center;
    margin-bottom: 35px;
    position: relative;
}

.header-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: 1px solid rgba(16, 185, 129, 0.25);
    display: inline-block;
    margin-bottom: 16px;
    animation: badgePulse 3s infinite;
}

.main-header h1 {
    font-size: 2.3rem;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: -0.5px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #0f172a 0%, #334155 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 680px;
    margin: 0 auto;
    font-weight: 500;
}

/* Calculator Tabs Bar */
.calculator-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 35px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 8px;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border: none;
    background: transparent;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tab-btn .tab-icon {
    font-size: 1.2rem;
}

.tab-btn:hover {
    color: var(--primary-dark);
    background: #f1f5f9;
}

.tab-btn.active {
    background: #ffffff;
    color: var(--primary-green-dark);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Tab Content Displays */
.tab-content {
    display: none;
    animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.tab-content.active {
    display: block;
}

/* Calculator Grid Layout */
.calc-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: start;
}

.calc-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 28px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.card-title h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #f1f5f9;
}

/* Preset Chip Buttons */
.preset-group {
    margin-bottom: 20px;
}

.preset-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.chip-btn {
    padding: 6px 14px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.chip-btn:hover {
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary-green-dark);
    border-color: rgba(16, 185, 129, 0.4);
}

/* Form Input Controls */
.input-group {
    margin-bottom: 24px;
}

.label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.input-group label, .input-label {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
}

.val-display {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--primary-green-dark);
    background: rgba(16, 185, 129, 0.08);
    padding: 2px 10px;
    border-radius: 6px;
}

/* Range Slider Styling */
input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    height: 7px;
    border-radius: 5px;
    background: #e2e8f0;
    outline: none;
    margin: 10px 0;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-green);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
    transition: transform 0.2s ease, background-color 0.2s ease;
}

input[type=range]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-green-dark);
}

/* Number Input Box Wrapper */
.number-input-wrapper {
    display: flex;
    align-items: center;
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    padding: 8px 14px;
    transition: border-color 0.2s ease;
}

.number-input-wrapper:focus-within {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.currency-symbol {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-right: 6px;
}

.number-input-wrapper input {
    border: none;
    background: transparent;
    width: 100%;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary-dark);
    outline: none;
}

/* Dropdown Styling */
.styled-select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    background: #f8fafc;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-dark);
    outline: none;
    margin-top: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.styled-select:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* Results Card Highlights */
.result-highlight-box {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    padding: 22px;
    border-radius: 16px;
    text-align: center;
    margin-bottom: 24px;
    box-shadow: 0 10px 20px -5px rgba(16, 185, 129, 0.3);
}

.result-highlight-box.blue-gradient {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.3);
}

.result-highlight-box.green-gradient {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

.highlight-label {
    font-size: 0.88rem;
    font-weight: 600;
    opacity: 0.9;
    display: block;
    margin-bottom: 6px;
}

.highlight-value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Detailed Stat List */
.stat-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-radius: 10px;
    background: #f8fafc;
    border: 1px solid #edf2f7;
    font-size: 0.92rem;
}

.stat-row.highlight-row {
    background: rgba(16, 185, 129, 0.06);
    border-color: rgba(16, 185, 129, 0.2);
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-val {
    font-weight: 700;
    color: var(--primary-dark);
}

.stat-val.positive {
    color: #0284c7;
}

.stat-val.negative {
    color: #e11d48;
}

.stat-val.bold-green {
    color: #059669;
    font-size: 1.05rem;
}

.badge-green {
    background: #dcfce7;
    color: #15803d;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.9rem;
}

/* Progress Bar Breakdown */
.visual-breakdown {
    margin-top: 20px;
    margin-bottom: 20px;
}

.breakdown-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.progress-bar-container {
    height: 12px;
    background: #e2e8f0;
    border-radius: 10px;
    display: flex;
    overflow: hidden;
}

.progress-bar-fill.principal-fill {
    background: #3b82f6;
}

.progress-bar-fill.interest-fill {
    background: #10b981;
}

/* Info Note Callout */
.info-note {
    background: #f1f5f9;
    border-left: 4px solid #94a3b8;
    padding: 12px 16px;
    border-radius: 0 10px 10px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 16px;
}

.info-note.success-note {
    background: #f0fdf4;
    border-left-color: var(--primary-green);
    color: #166534;
}

/* Secondary Action Button */
.secondary-btn {
    width: 100%;
    padding: 12px;
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--primary-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 10px;
}

.secondary-btn:hover {
    background: #e2e8f0;
}

/* Data Table Styling */
.table-container {
    margin-top: 16px;
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 10px 14px;
    border-bottom: 1px solid #edf2f7;
}

.data-table th {
    background: #f8fafc;
    color: var(--text-secondary);
    font-weight: 700;
    position: sticky;
    top: 0;
}

.data-table tr:hover {
    background: #f1f5f9;
}

/* Keyframe Animations */
@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

@keyframes floatGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 40px) scale(1.1); }
}

/* Scrollbar Style */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

/* Responsive Rules */
@media (max-width: 850px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }

    .main-header h1 {
        font-size: 1.7rem;
    }

    .calculator-tabs {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
        justify-content: center;
    }

    .highlight-value {
        font-size: 1.6rem;
    }
}