/* Calculator Suite Styles */

/* Container */
.calc-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.calc-header {
    text-align: center;
    margin-bottom: 2rem;
}

.calc-header h1 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.calc-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Tab Selection */
.calc-selection {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.calc-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0.75rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    font-weight: 500;
    min-width: 80px;
    font-family: 'Poppins', sans-serif;
}

.calc-tab svg {
    width: 24px;
    height: 24px;
}

.calc-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.calc-tab.active {
    background: linear-gradient(135deg, rgba(88, 101, 242, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%);
    border-color: var(--primary);
    color: var(--primary);
}

/* Calculator Panels */
.calc-panel {
    display: none;
}

.calc-panel.active {
    display: block;
}

/* ==================== BASIC & SCIENTIFIC CALCULATORS ==================== */

.basic-calculator,
.scientific-calculator {
    max-width: 400px;
    margin: 0 auto;
}

.calc-display {
    background: var(--dark-bg);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.calc-history {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: right;
    min-height: 1.5rem;
    font-family: 'Poppins', sans-serif;
}

.calc-input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 2.5rem;
    text-align: right;
    font-family: 'Poppins', sans-serif;
    outline: none;
}

/* DEG/RAD Toggle */
.sci-mode-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.mode-btn {
    flex: 1;
    padding: 0.5rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.mode-btn.active {
    border-color: var(--primary);
    background: rgba(88, 101, 242, 0.1);
    color: var(--primary);
}

/* Calculator Buttons Grid */
.calc-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.calc-buttons.scientific {
    grid-template-columns: repeat(5, 1fr);
}

.calc-btn {
    padding: 1.25rem;
    border: none;
    border-radius: 12px;
    font-size: 1.25rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--surface-color);
    color: var(--text-light);
    font-family: 'Poppins', sans-serif;
}

.calc-btn:hover {
    transform: translateY(-2px);
}

.calc-btn:active {
    transform: translateY(0);
}

.calc-btn.number {
    background: rgba(255, 255, 255, 0.1);
}

.calc-btn.number:hover {
    background: rgba(255, 255, 255, 0.15);
}

.calc-btn.operator {
    background: var(--primary);
    color: white;
}

.calc-btn.operator:hover {
    background: #4752c4;
}

.calc-btn.func {
    background: rgba(255, 255, 255, 0.05);
    color: var(--primary);
}

.calc-btn.func:hover {
    background: rgba(88, 101, 242, 0.1);
}

.calc-btn.equals {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.calc-btn.equals:hover {
    box-shadow: 0 4px 15px rgba(88, 101, 242, 0.4);
}

.calc-btn.zero {
    grid-column: span 2;
}

.calc-btn.sci {
    font-size: 0.85rem;
    padding: 0.75rem 0.5rem;
    background: rgba(124, 58, 237, 0.15);
    color: var(--secondary);
}

.calc-btn.sci:hover {
    background: rgba(124, 58, 237, 0.25);
}

.calc-btn.sci-equals {
    grid-column: span 2;
}

/* ==================== SHARED FORM STYLES ==================== */

.input-section {
    background: var(--surface-color);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group:last-of-type {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.input-with-prefix {
    display: flex;
    align-items: center;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.input-with-prefix:focus-within {
    border-color: var(--primary);
}

.input-with-prefix .prefix {
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border-right: 1px solid var(--border-color);
}

.input-with-prefix input {
    border: none;
    border-radius: 0;
}

.input-with-suffix {
    display: flex;
    align-items: center;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.input-with-suffix:focus-within {
    border-color: var(--primary);
}

.input-with-suffix .suffix {
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border-left: 1px solid var(--border-color);
}

.input-with-suffix input {
    border: none;
    border-radius: 0;
}

.helper-text {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* Calculate Button */
.calculate-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
    font-family: 'Poppins', sans-serif;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(88, 101, 242, 0.4);
}

/* ==================== RESULTS SECTION ==================== */

.results-section {
    background: var(--surface-color);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.result-card {
    background: var(--dark-bg);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

.result-card:last-child {
    margin-bottom: 0;
}

.result-card.primary {
    background: linear-gradient(135deg, rgba(88, 101, 242, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%);
    border: 1px solid var(--primary);
}

.result-card.accent {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 200, 100, 0.1) 100%);
    border: 1px solid var(--accent-color);
}

.result-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.result-value {
    display: block;
    color: var(--text-light);
    font-size: 1.5rem;
    font-weight: 600;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

/* ==================== MORTGAGE CALCULATOR ==================== */

.toggle-schedule {
    width: 100%;
    padding: 0.75rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

.toggle-schedule:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.toggle-schedule.active svg {
    transform: rotate(180deg);
}

.amortization-table {
    max-height: 300px;
    overflow-y: auto;
    margin-top: 1rem;
    display: none;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.amortization-table.show {
    display: block;
}

.amortization-table table {
    width: 100%;
    border-collapse: collapse;
}

.amortization-table th,
.amortization-table td {
    padding: 0.75rem;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.amortization-table th {
    color: var(--text-muted);
    font-weight: 500;
    position: sticky;
    top: 0;
    background: var(--surface-color);
}

.amortization-table td {
    color: var(--text-light);
}

.amortization-table tr:last-child td {
    border-bottom: none;
}

/* ==================== SUB-TABS (Finance, Fuel, Date, Percentage, Conversion) ==================== */

.sub-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.sub-tab {
    padding: 0.75rem 1rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    flex: 1;
    text-align: center;
}

.sub-tab:hover {
    border-color: var(--primary);
}

.sub-tab.active {
    border-color: var(--primary);
    background: rgba(88, 101, 242, 0.1);
    color: var(--primary);
}

.sub-panel {
    display: none;
}

.sub-panel.active {
    display: block;
}

/* ==================== FUEL CALCULATOR ==================== */

.input-with-prefix-suffix {
    display: flex;
    align-items: center;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.input-with-prefix-suffix:focus-within {
    border-color: var(--primary);
}

.input-with-prefix-suffix .prefix {
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border-right: 1px solid var(--border-color);
}

.input-with-prefix-suffix .suffix {
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border-left: 1px solid var(--border-color);
}

.input-with-prefix-suffix input {
    border: none;
    border-radius: 0;
    flex: 1;
}

/* ==================== DATE CALCULATOR ==================== */

.add-subtract-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.add-subtract-row select {
    width: auto;
    min-width: 120px;
}

.add-subtract-row input {
    width: 100px;
    text-align: center;
}

.add-subtract-row span {
    color: var(--text-muted);
}

/* ==================== CONVERSION CALCULATOR ==================== */

.conversion-results {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.conversion-results .result-card {
    margin-bottom: 0;
}

.conversion-results .result-value {
    font-size: 1.1rem;
}

/* ==================== BMI CALCULATOR ==================== */

.unit-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.unit-btn {
    flex: 1;
    padding: 0.75rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
}

.unit-btn.active {
    border-color: var(--primary);
    background: rgba(88, 101, 242, 0.1);
    color: var(--primary);
}

.height-inputs {
    display: flex;
    gap: 0.5rem;
}

.height-field {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.height-field input {
    border: none;
    border-radius: 0;
    flex: 1;
}

.height-field span {
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border-left: 1px solid var(--border-color);
}

.bmi-display {
    text-align: center;
    padding: 1.5rem;
}

.bmi-value {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.bmi-category {
    font-size: 1.25rem;
    margin-top: 0.5rem;
    color: var(--text-muted);
}

.bmi-category.underweight { color: #3b82f6; }
.bmi-category.normal { color: #22c55e; }
.bmi-category.overweight { color: #f59e0b; }
.bmi-category.obese { color: #ef4444; }

.bmi-scale {
    margin: 1.5rem 0;
    padding: 0 0.5rem;
}

.scale-bar {
    height: 12px;
    background: linear-gradient(to right,
        #3b82f6 0%, #3b82f6 23.1%,
        #22c55e 23.1%, #22c55e 37%,
        #f59e0b 37%, #f59e0b 50%,
        #ef4444 50%, #ef4444 100%
    );
    border-radius: 6px;
    position: relative;
}

.scale-indicator {
    position: absolute;
    width: 4px;
    height: 20px;
    background: white;
    border-radius: 2px;
    top: -4px;
    left: 0;
    transition: left 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
    display: none;
}

.scale-indicator.show {
    display: block;
}

.scale-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
}

.scale-labels span {
    flex: 1;
}

.bmi-info {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.bmi-info h4 {
    color: var(--text-light);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.bmi-info ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.bmi-info li {
    padding: 0.35rem 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.bmi-info .cat {
    font-weight: 600;
}

.bmi-info .cat.underweight { color: #3b82f6; }
.bmi-info .cat.normal { color: #22c55e; }
.bmi-info .cat.overweight { color: #f59e0b; }
.bmi-info .cat.obese { color: #ef4444; }

/* ==================== AGE CALCULATOR ==================== */

.age-display {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0.5rem 0;
}

.age-part {
    font-size: 1rem;
    color: var(--text-muted);
}

.age-part span {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
    margin-bottom: 0.25rem;
}

.birthday-info {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ==================== PERCENTAGE CALCULATOR ==================== */

.percent-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.percent-tab {
    padding: 0.75rem 1rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
}

.percent-tab:hover {
    border-color: var(--primary);
}

.percent-tab.active {
    border-color: var(--primary);
    background: rgba(88, 101, 242, 0.1);
    color: var(--primary);
}

.percent-panel {
    display: none;
}

.percent-panel.active {
    display: block;
}

.percent-question {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 1.1rem;
    color: var(--text-light);
    justify-content: center;
}

.percent-question input {
    width: 100px;
    padding: 0.75rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-light);
    text-align: center;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
}

.percent-question input:focus {
    outline: none;
    border-color: var(--primary);
}

.percent-question select {
    padding: 0.75rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
}

.percentage-calculator .input-section {
    margin-bottom: 1rem;
}

.percentage-calculator .results-section {
    text-align: center;
}

.percentage-calculator .result-value {
    font-size: 2rem;
}

/* ==================== TOAST ==================== */

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1001;
    font-family: 'Poppins', sans-serif;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.error {
    background: var(--error);
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 768px) {
    .calc-container {
        padding: 1rem;
    }

    .calc-header h1 {
        font-size: 2rem;
    }

    .calc-selection {
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }

    .calc-tab {
        min-width: 70px;
        font-size: 0.75rem;
        flex-shrink: 0;
    }

    .calc-btn {
        padding: 1rem;
        font-size: 1.1rem;
    }

    .result-grid {
        grid-template-columns: 1fr;
    }

    .birthday-info {
        grid-template-columns: 1fr;
    }

    .sub-tabs {
        flex-wrap: wrap;
    }

    .sub-tab {
        flex: 1 1 calc(50% - 0.25rem);
    }

    .conversion-results {
        grid-template-columns: 1fr;
    }

    .add-subtract-row {
        flex-wrap: wrap;
    }

    .add-subtract-row select,
    .add-subtract-row input {
        flex: 1;
        min-width: 80px;
    }
}

@media (max-width: 480px) {
    .calc-container {
        padding: 0.75rem;
    }

    .calc-header h1 {
        font-size: 1.75rem;
    }

    .calc-header p {
        font-size: 0.95rem;
    }

    .calc-input {
        font-size: 2rem;
    }

    .calc-btn {
        padding: 0.875rem;
        font-size: 1rem;
    }

    .calc-buttons.scientific {
        grid-template-columns: repeat(5, 1fr);
        gap: 0.4rem;
    }

    .calc-buttons.scientific .calc-btn {
        padding: 0.6rem 0.3rem;
        font-size: 0.75rem;
    }

    .calc-buttons.scientific .calc-btn.sci {
        font-size: 0.7rem;
    }

    .age-display {
        flex-direction: column;
        gap: 0.75rem;
    }

    .age-part {
        display: flex;
        align-items: baseline;
        justify-content: center;
        gap: 0.5rem;
    }

    .age-part span {
        display: inline;
        font-size: 1.5rem;
    }

    .bmi-value {
        font-size: 3rem;
    }

    .sub-tab {
        flex: 1 1 100%;
        font-size: 0.8rem;
        padding: 0.6rem;
    }

    .percent-question {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .percent-question input {
        width: 100%;
    }

    .percent-question select {
        width: 100%;
    }

    .input-section {
        padding: 1rem;
    }

    .results-section {
        padding: 1rem;
    }
}