/* =========================================
   Car EMI Calculator — Refined Dark Luxury
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&display=swap');

:root {
    --cec-bg:          #0d0f14;
    --cec-surface:     #151820;
    --cec-surface-2:   #1c2029;
    --cec-border:      rgba(255,255,255,0.07);
    --cec-accent:      #f5a623;
    --cec-accent-2:    #e8715a;
    --cec-accent-3:    #5271f5;
    --cec-text:        #f0f1f5;
    --cec-muted:       #8c93a8;
    --cec-radius:      16px;
    --cec-radius-sm:   10px;
    --cec-shadow:      0 24px 64px rgba(0,0,0,0.5);
    --cec-glow:        0 0 40px rgba(245,166,35,0.12);

    /* Donut colors */
    --cec-c-principal: #5271f5;
    --cec-c-interest:  #f5a623;
    --cec-c-down:      #3ecfa3;
}

.cec-wrapper {
    font-family: 'DM Sans', sans-serif;
    background: var(--cec-bg);
    color: var(--cec-text);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--cec-shadow), var(--cec-glow);
    max-width: 960px;
    margin: 32px auto;
    position: relative;
}

.cec-wrapper::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--cec-accent-3), var(--cec-accent), var(--cec-accent-2));
}

/* ---- HEADER ---- */
.cec-header {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 28px 36px;
    background: linear-gradient(135deg, rgba(82,113,245,0.12) 0%, rgba(245,166,35,0.05) 100%);
    border-bottom: 1px solid var(--cec-border);
}

.cec-header-icon {
    width: 56px;
    height: 44px;
    color: var(--cec-accent);
    flex-shrink: 0;
}

.cec-header-icon svg {
    width: 100%;
    height: 100%;
}

.cec-header-text h2 {
    font-family: 'DM Serif Display', serif;
    font-size: 1.6rem;
    font-weight: 400;
    margin: 0 0 4px;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 60%, var(--cec-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cec-header-text p {
    margin: 0;
    color: var(--cec-muted);
    font-size: 0.9rem;
    font-weight: 300;
}

/* ---- BODY LAYOUT ---- */
.cec-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

/* ---- INPUTS ---- */
.cec-inputs {
    padding: 32px 36px;
    border-right: 1px solid var(--cec-border);
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.cec-field {}

.cec-field-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--cec-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.cec-input-group {
    display: flex;
    align-items: center;
    background: var(--cec-surface-2);
    border: 1px solid var(--cec-border);
    border-radius: var(--cec-radius-sm);
    overflow: hidden;
    transition: border-color 0.2s;
}

.cec-input-group:focus-within {
    border-color: var(--cec-accent);
}

.cec-currency-badge {
    padding: 0 10px;
    color: var(--cec-accent);
    font-weight: 600;
    font-size: 0.9rem;
    background: rgba(245,166,35,0.08);
    height: 36px;
    display: flex;
    align-items: center;
    border-right: 1px solid var(--cec-border);
}

.cec-badge-right {
    border-right: none;
    border-left: 1px solid var(--cec-border);
}

.cec-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--cec-text);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0 10px;
    height: 36px;
    width: 110px;
    text-align: right;
}

.cec-input-rate {
    width: 70px;
}

/* Hide number spinners */
.cec-input::-webkit-outer-spin-button,
.cec-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.cec-input[type=number] { -moz-appearance: textfield; }

/* ---- SLIDER ---- */
.cec-slider-track {
    position: relative;
    height: 6px;
    background: var(--cec-surface-2);
    border-radius: 100px;
    margin-bottom: 8px;
}

.cec-slider-fill {
    position: absolute;
    top: 0; left: 0;
    height: 100%;
    border-radius: 100px;
    background: linear-gradient(90deg, var(--cec-accent-3), var(--cec-accent));
    pointer-events: none;
    transition: width 0.1s;
}

.cec-slider {
    -webkit-appearance: none;
    appearance: none;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100%;
    height: 6px;
    background: transparent;
    outline: none;
    cursor: pointer;
    z-index: 1;
}

.cec-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--cec-accent);
    box-shadow: 0 2px 8px rgba(245,166,35,0.4);
    cursor: grab;
    transition: transform 0.15s, box-shadow 0.15s;
}

.cec-slider::-webkit-slider-thumb:active {
    cursor: grabbing;
    transform: scale(1.2);
    box-shadow: 0 4px 16px rgba(245,166,35,0.6);
}

.cec-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--cec-accent);
    box-shadow: 0 2px 8px rgba(245,166,35,0.4);
    cursor: grab;
}

.cec-slider-range {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--cec-muted);
    font-weight: 400;
}

/* ---- TENURE BUTTONS ---- */
.cec-tenure-btns {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.cec-tenure-btn {
    padding: 6px 12px;
    border-radius: 100px;
    border: 1px solid var(--cec-border);
    background: var(--cec-surface-2);
    color: var(--cec-muted);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.3px;
}

.cec-tenure-btn:hover {
    border-color: var(--cec-accent);
    color: var(--cec-accent);
}

.cec-tenure-btn.active {
    background: var(--cec-accent);
    border-color: var(--cec-accent);
    color: #000;
    font-weight: 700;
}

/* ---- RESULTS ---- */
.cec-results {
    padding: 32px 36px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* EMI Card */
.cec-emi-card {
    background: linear-gradient(135deg, rgba(82,113,245,0.2) 0%, rgba(245,166,35,0.1) 100%);
    border: 1px solid rgba(82,113,245,0.3);
    border-radius: var(--cec-radius);
    padding: 24px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cec-emi-card::after {
    content: '';
    position: absolute;
    top: -30px; right: -30px;
    width: 120px; height: 120px;
    background: radial-gradient(circle, rgba(245,166,35,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.cec-emi-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--cec-muted);
    font-weight: 500;
    margin-bottom: 8px;
}

.cec-emi-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.cec-emi-currency {
    font-family: 'DM Serif Display', serif;
    font-size: 1.6rem;
    color: var(--cec-accent);
}

.cec-emi-value {
    font-family: 'DM Serif Display', serif;
    font-size: 3rem;
    font-weight: 400;
    letter-spacing: -2px;
    color: #fff;
    transition: all 0.3s;
    line-height: 1;
}

/* ---- CHART ---- */
.cec-chart-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.cec-donut-wrap {
    width: 160px;
    height: 160px;
    flex-shrink: 0;
    filter: drop-shadow(0 8px 24px rgba(82,113,245,0.25));
}

.cec-donut {
    width: 100%;
    height: 100%;
    transform: rotate(0deg);
}

.cec-donut-bg {
    stroke: var(--cec-surface-2);
}

.cec-donut-principal {
    stroke: var(--cec-c-principal);
    transition: stroke-dashoffset 0.5s cubic-bezier(0.4,0,0.2,1);
}

.cec-donut-interest {
    stroke: var(--cec-c-interest);
    transition: stroke-dashoffset 0.5s cubic-bezier(0.4,0,0.2,1);
}

.cec-donut-down {
    stroke: var(--cec-c-down);
    transition: stroke-dashoffset 0.5s cubic-bezier(0.4,0,0.2,1);
}

.cec-legend {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cec-legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--cec-surface-2);
    border-radius: var(--cec-radius-sm);
    border: 1px solid var(--cec-border);
}

.cec-legend-item.cec-legend-total {
    background: rgba(245,166,35,0.06);
    border-color: rgba(245,166,35,0.2);
}

.cec-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.cec-dot-principal { background: var(--cec-c-principal); }
.cec-dot-interest  { background: var(--cec-c-interest); }
.cec-dot-down      { background: var(--cec-c-down); }
.cec-dot-total     { background: linear-gradient(135deg, var(--cec-accent-3), var(--cec-accent)); }

.cec-legend-label {
    font-size: 0.75rem;
    color: var(--cec-muted);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cec-legend-val {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--cec-text);
    transition: all 0.3s;
}

.cec-legend-total .cec-legend-val {
    color: var(--cec-accent);
}

/* ---- AMORTIZATION ---- */
.cec-amort-section {
    border-top: 1px solid var(--cec-border);
    padding: 0;
}

.cec-amort-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 36px;
    background: transparent;
    border: none;
    color: var(--cec-muted);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
    text-align: left;
}

.cec-amort-toggle:hover {
    color: var(--cec-accent);
}

.cec-toggle-arrow {
    margin-left: auto;
    transition: transform 0.3s;
}

.cec-amort-toggle.open .cec-toggle-arrow {
    transform: rotate(180deg);
}

.cec-amort-table-wrap {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
}

.cec-amort-table-wrap.open {
    max-height: 420px;
}

.cec-table-scroll {
    overflow-y: auto;
    max-height: 400px;
    padding: 0 36px 24px;
}

.cec-table-scroll::-webkit-scrollbar { width: 4px; }
.cec-table-scroll::-webkit-scrollbar-track { background: var(--cec-surface-2); }
.cec-table-scroll::-webkit-scrollbar-thumb { background: var(--cec-accent); border-radius: 4px; }

.cec-amort-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.cec-amort-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--cec-surface-2);
    color: var(--cec-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    font-size: 0.75rem;
    position: sticky;
    top: 0;
    z-index: 1;
}

.cec-amort-table th:first-child { border-radius: 8px 0 0 8px; }
.cec-amort-table th:last-child  { border-radius: 0 8px 8px 0; }

.cec-amort-table td {
    padding: 8px 12px;
    color: var(--cec-text);
    border-bottom: 1px solid var(--cec-border);
    transition: background 0.15s;
}

.cec-amort-table tbody tr:hover td {
    background: rgba(255,255,255,0.03);
}

.cec-amort-table .cec-row-interest {
    color: var(--cec-accent);
}

.cec-amort-table .cec-row-principal {
    color: var(--cec-c-principal);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 700px) {
    .cec-body {
        grid-template-columns: 1fr;
    }

    .cec-inputs {
        border-right: none;
        border-bottom: 1px solid var(--cec-border);
        padding: 24px 20px;
    }

    .cec-results {
        padding: 24px 20px;
    }

    .cec-header {
        padding: 20px;
        gap: 12px;
    }

    .cec-header-text h2 {
        font-size: 1.2rem;
    }

    .cec-emi-value {
        font-size: 2.2rem;
    }

    .cec-chart-section {
        flex-direction: row;
        align-items: flex-start;
    }

    .cec-donut-wrap {
        width: 120px;
        height: 120px;
    }

    .cec-legend {
        flex: 1;
    }

    .cec-amort-toggle,
    .cec-table-scroll {
        padding-left: 20px;
        padding-right: 20px;
    }
}

@media (max-width: 420px) {
    .cec-chart-section {
        flex-direction: column;
        align-items: center;
    }

    .cec-tenure-btn {
        padding: 5px 9px;
        font-size: 0.75rem;
    }
}

/* ---- ANIMATIONS ---- */
@keyframes cecFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.cec-wrapper {
    animation: cecFadeIn 0.5s ease-out;
}

.cec-emi-value.updated {
    animation: cecPulse 0.3s ease-out;
}

@keyframes cecPulse {
    0%   { transform: scale(1); }
    50%  { transform: scale(1.06); color: var(--cec-accent); }
    100% { transform: scale(1); }
}