/* ============================================
   CALCULATOR PAGE
   ============================================ */

/* Header для калькулятора */
.header-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text, #1F2937);
    margin: 0;
    flex: 1;
    text-align: center;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--color-primary, #3B82F6);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: opacity 0.2s;
}

.back-link:hover {
    opacity: 0.8;
}

.back-link svg {
    width: 18px;
    height: 18px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary, #F9FAFB);
    border: 1px solid var(--color-border, #E5E7EB);
    border-radius: 8px;
    color: var(--color-text-secondary, #6B7280);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--color-bg-tertiary, #F3F4F6);
    color: var(--color-text, #1F2937);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* Main Calculator Layout */
.calculator-main {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
    padding-bottom: 2rem;
}

.calc-section {
    background: var(--color-bg, #fff);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--color-border, #E5E7EB);
}

.calc-section h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text, #1F2937);
    margin: 0 0 1rem 0;
}

.calc-section h2 svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary, #3B82F6);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    margin: 0;
}

/* Date inputs */
.calc-date-wrapper {
    margin-bottom: 1rem;
}

.calc-date-field {
    width: 100%;
    max-width: 200px;
    padding: 0.75rem 1rem;
    font-size: 1.1rem;
    border: 2px solid var(--color-border, #E5E7EB);
    border-radius: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.calc-date-field:focus {
    outline: none;
    border-color: var(--color-primary, #3B82F6);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.calc-date-field-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    border: 1px solid var(--color-border, #E5E7EB);
    border-radius: 6px;
}

.calc-date-field-sm:focus {
    outline: none;
    border-color: var(--color-primary, #3B82F6);
}

/* Current period */
.calc-current-period {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    border-radius: 10px;
    border: 1px solid #C7D2FE;
}

.current-period-icon {
    font-size: 1.5rem;
}

.current-period-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.period-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted, #6B7280);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.period-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary, #4F46E5);
}

/* Milestones */
.milestones-table {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.milestone-row {
    display: grid;
    grid-template-columns: 70px 1fr auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.625rem 0.75rem;
    background: var(--color-bg-secondary, #F9FAFB);
    border-radius: 8px;
    transition: all 0.2s;
}

.milestone-row.passed {
    opacity: 0.6;
}

.milestone-row.current {
    background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
    border: 1px solid #6EE7B7;
}

.milestone-week {
    font-weight: 600;
    color: var(--color-text, #1F2937);
}

.milestone-date {
    color: var(--color-text-secondary, #4B5563);
}

.milestone-status {
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.milestone-status.passed {
    color: #059669;
}

.milestone-status.current {
    color: #059669;
    font-weight: 600;
}

.milestone-status.future {
    color: var(--color-text-muted, #9CA3AF);
}

/* Calculation rows */
.calc-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.calc-label {
    color: var(--color-text-secondary, #4B5563);
}

.calc-number-input {
    width: 70px;
    padding: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    border: 2px solid var(--color-border, #E5E7EB);
    border-radius: 8px;
    transition: border-color 0.2s;
}

.calc-number-input:focus {
    outline: none;
    border-color: var(--color-primary, #3B82F6);
}

.calc-result {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    background: var(--color-bg-secondary, #F9FAFB);
    border-radius: 8px;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--color-text, #1F2937);
}

.calc-result svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary, #3B82F6);
}

/* Modal specific */
.modal-lg {
    max-width: 500px;
}

.modal-divider {
    border: none;
    border-top: 1px solid var(--color-border, #E5E7EB);
    margin: 1.25rem 0;
}

.modal-body h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0 0 0.75rem 0;
    color: var(--color-text, #1F2937);
}

.hint {
    font-size: 0.8rem;
    color: var(--color-text-muted, #9CA3AF);
    margin: 0 0 0.75rem 0;
}

/* Presets */
.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.5rem;
}

.preset-btn {
    padding: 0.625rem 0.75rem;
    border: 2px solid var(--color-border, #E5E7EB);
    border-radius: 8px;
    background: var(--color-bg, #fff);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.preset-btn:hover {
    border-color: var(--color-primary, #3B82F6);
}

.preset-btn.active {
    border-color: var(--color-primary, #3B82F6);
    background: #EEF2FF;
    color: var(--color-primary, #4F46E5);
}

/* Weeks grid */
.weeks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: 0.5rem;
}

.week-btn {
    padding: 0.5rem;
    border: 2px solid var(--color-border, #E5E7EB);
    border-radius: 6px;
    background: var(--color-bg, #fff);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.week-btn:hover {
    border-color: var(--color-primary, #3B82F6);
}

.week-btn.selected {
    border-color: var(--color-primary, #3B82F6);
    background: var(--color-primary, #3B82F6);
    color: #fff;
}

/* Custom weeks input */
.custom-weeks-input {
    display: flex;
    gap: 0.5rem;
}

.custom-weeks-input input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border, #E5E7EB);
    border-radius: 6px;
    font-size: 0.9rem;
}

.custom-weeks-input input:focus {
    outline: none;
    border-color: var(--color-primary, #3B82F6);
}

/* Current selection */
.current-selection {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: #FEF3C7;
    border-radius: 8px;
    font-size: 0.9rem;
}

.current-selection .label {
    font-weight: 500;
    color: #92400E;
}

#current-weeks-list {
    color: #B45309;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 480px) {
    .calculator-main {
        padding: 0.75rem;
    }

    .calc-section {
        padding: 1rem;
    }

    .milestone-row {
        grid-template-columns: 60px 1fr auto;
        font-size: 0.9rem;
    }

    .calc-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .calc-date-field {
        max-width: 100%;
    }

    .presets-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .header-content {
        padding: 0.75rem 1rem;
    }

    .header-title {
        font-size: 1rem;
    }
}