/* ── Calculator page ───────────────────────────────── */

.calc-section {
    padding: 48px 0 100px;
}

.calc__title {
    margin-bottom: 8px;
}

.calc__desc {
    margin-bottom: 40px;
    max-width: 640px;
    font-size: 20px;
    line-height: 160%;
}

/* ── Card ─────────────────────────────────────────── */

.calc__card {
    padding: 48px;
    border-radius: 28px;
    margin-bottom: 40px;
    position: relative;
    overflow: visible;
}

/* Atmospheric gradient tint */
.calc__card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background:
        radial-gradient(
            ellipse 50% 40% at 10% 10%,
            rgba(74, 144, 232, 0.04) 0%,
            transparent 100%
        ),
        radial-gradient(
            ellipse 40% 35% at 90% 80%,
            rgba(20, 194, 79, 0.03) 0%,
            transparent 100%
        ),
        radial-gradient(
            ellipse 35% 30% at 50% 50%,
            rgba(170, 0, 255, 0.02) 0%,
            transparent 100%
        );
    z-index: 0;
}

.calc__card > * {
    position: relative;
    z-index: 1;
}

/* ── Steps ────────────────────────────────────────── */

.calc__step {
    display: none;
    padding-bottom: 32px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--stroke-secondary-interface);
    position: relative;
}

.calc__step[data-step="1"] {
    z-index: 4;
}
.calc__step[data-step="2"] {
    z-index: 3;
}
.calc__step[data-step="3"] {
    z-index: 2;
}
.calc__step[data-step="4"] {
    z-index: 1;
}

.calc__step:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.calc__step--active {
    display: block;
    animation: calcFadeIn 0.35s ease;
}

@keyframes calcFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.calc__step-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.calc__step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4a90e8 0%, #0b57db 100%);
    color: #fff;
    font-family: var(--second-family);
    font-weight: 600;
    font-size: 20px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(9, 75, 186, 0.3);
}

.calc__label {
    font-family: var(--second-family);
    font-weight: 500;
    font-size: 20px;
    line-height: 140%;
    color: var(--typograph-black);
}

/* ── Region search ────────────────────────────────── */

.calc__select-wrap {
    position: relative;
}

.calc__search {
    width: 100%;
    max-width: 480px;
    padding: 14px 20px;
    border: 1px solid var(--stroke-secondary-interface);
    border-radius: 16px;
    font-family: var(--font-family);
    font-size: 20px;
    line-height: 150%;
    color: var(--typograph-black);
    background: var(--background-cream-secondary);
    outline: none;
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}

.calc__search:focus {
    border-color: var(--typograph-blue);
    box-shadow: 0 0 0 3px rgba(9, 75, 186, 0.1);
}

.calc__search::placeholder {
    color: var(--typograph-black-secondary);
}

.calc__dropdown {
    display: none;
    position: fixed;
    max-width: 480px;
    max-height: 280px;
    overflow-y: auto;
    background: var(--typograph-white-primary);
    border: 1px solid var(--stroke-secondary-interface);
    border-radius: 16px;
    box-shadow:
        0 12px 48px rgba(0, 0, 0, 0.12),
        0 2px 6px rgba(0, 0, 0, 0.04);
    z-index: 9999;
    padding: 6px;
}

/* Custom scrollbar */
.calc__dropdown::-webkit-scrollbar {
    width: 6px;
}

.calc__dropdown::-webkit-scrollbar-track {
    background: transparent;
    margin: 8px 0;
}

.calc__dropdown::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

.calc__dropdown::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

.calc__dropdown--open {
    display: block;
}

.calc__dropdown-item {
    display: block;
    width: 100%;
    padding: 11px 16px;
    border: none;
    background: transparent;
    text-align: left;
    font-family: var(--font-family);
    font-size: 20px;
    line-height: 150%;
    color: var(--typograph-black);
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.15s;
}

.calc__dropdown-item:hover {
    background: rgba(9, 75, 186, 0.06);
}

.calc__dropdown-item--hidden {
    display: none;
}

.calc__dropdown-empty {
    padding: 20px 16px;
    text-align: center;
    color: var(--typograph-black-secondary);
    font-size: 20px;
}

/* ── Chips ────────────────────────────────────────── */

.calc__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.calc__chip {
    padding: 10px 22px;
    border: 1px solid var(--stroke-secondary-interface);
    border-radius: 100px;
    background: var(--background-cream-secondary);
    font-family: var(--font-family);
    font-size: 20px;
    line-height: 150%;
    color: var(--typograph-black);
    cursor: pointer;
    transition: all 0.2s;
}

.calc__chip:hover {
    border-color: var(--typograph-blue);
    color: var(--typograph-blue);
    background: rgba(9, 75, 186, 0.04);
}

.calc__chip--active {
    background: linear-gradient(135deg, #4a90e8 0%, #0b57db 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 16px rgba(6, 62, 160, 0.3);
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.15);
}

.calc__chip--active:hover {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, #5a9af0 0%, #1460e0 100%);
}

/* ── Consumption inputs ───────────────────────────── */

.calc__inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.calc__input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 180px;
    flex: 1;
    max-width: 280px;
}

.calc__input-label {
    font-family: var(--font-family);
    font-size: 20px;
    font-weight: 500;
    color: var(--typograph-black-secondary);
    letter-spacing: 0.01em;
}

.calc__input {
    padding: 14px 20px;
    border: 1px solid var(--stroke-secondary-interface);
    border-radius: 16px;
    font-family: var(--font-family);
    font-size: 20px;
    font-weight: 500;
    line-height: 150%;
    color: var(--typograph-black);
    background: var(--background-cream-secondary);
    outline: none;
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
    width: 100%;
}

.calc__input:focus {
    border-color: var(--typograph-blue);
    box-shadow: 0 0 0 3px rgba(9, 75, 186, 0.1);
}

.calc__input::placeholder {
    color: var(--typograph-black-secondary);
    font-weight: 400;
}

/* ── Submit button ────────────────────────────────── */

.calc__submit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 16px;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 20px;
    line-height: 150%;
    color: #fff;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.calc__submit .material-symbols-rounded {
    font-size: 24px;
}

.calc__submit:hover {
    transform: translateY(-1px);
}

.calc__submit:active {
    transform: translateY(0);
}

/* ── Results ──────────────────────────────────────── */

.calc__result {
    display: none;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--stroke-secondary-interface);
    animation: calcFadeIn 0.4s ease;
}

.calc__result--visible {
    display: block;
}

.calc__result-title {
    font-family: var(--second-family);
    font-weight: 500;
    font-size: 28px;
    line-height: 130%;
    color: var(--typograph-black);
    margin-bottom: 24px;
}

.calc__result-total {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 24px;
    padding: 24px 28px;
    background: linear-gradient(
        135deg,
        rgba(9, 75, 186, 0.06) 0%,
        rgba(74, 144, 232, 0.04) 100%
    );
    border-radius: 20px;
    border: 1px solid rgba(9, 75, 186, 0.1);
}

.calc__result-total-label {
    font-family: var(--font-family);
    font-size: 20px;
    color: var(--typograph-black-secondary);
}

.calc__result-total-value {
    font-family: var(--second-family);
    font-weight: 600;
    font-size: 44px;
    line-height: 120%;
    color: var(--typograph-black);
    letter-spacing: -0.02em;
}

.calc__result-total-currency {
    font-family: var(--font-family);
    font-size: 20px;
    font-weight: 500;
    color: var(--typograph-black-secondary);
}

.calc__result-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}

.calc__result-table th {
    text-align: left;
    padding: 10px 14px;
    font-family: var(--font-family);
    font-size: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--typograph-black-secondary);
    border-bottom: 2px solid var(--stroke-secondary-interface);
}

.calc__result-table td {
    padding: 12px 14px;
    font-family: var(--font-family);
    font-size: 20px;
    line-height: 150%;
    color: var(--typograph-black);
    border-bottom: 1px solid var(--stroke-secondary-interface);
}

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

.calc__result-table .calc__row-total td {
    font-weight: 600;
    font-size: 20px;
    border-top: 2px solid var(--typograph-blue);
    border-bottom: none;
    padding-top: 16px;
}

.calc__result-validity {
    font-size: 20px;
    color: var(--typograph-black-secondary);
    margin-top: 8px;
}

/* ── CTA section ──────────────────────────────────── */

.calc__cta {
    padding: 56px 48px;
    border-radius: 28px;
    overflow: hidden;
    position: relative;
}

/* Atmospheric gradient for CTA */
.calc__cta::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background:
        radial-gradient(
            ellipse 50% 50% at 0% 50%,
            rgba(74, 144, 232, 0.06) 0%,
            transparent 100%
        ),
        radial-gradient(
            ellipse 40% 40% at 100% 50%,
            rgba(20, 194, 79, 0.04) 0%,
            transparent 100%
        );
    z-index: 0;
}

.calc__cta > * {
    position: relative;
    z-index: 1;
}

.calc__cta-inner {
    display: flex;
    align-items: center;
    gap: 36px;
}

.calc__cta-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 24px;
    background: linear-gradient(
        135deg,
        rgba(9, 75, 186, 0.1),
        rgba(74, 144, 232, 0.08)
    );
    border: 1px solid rgba(9, 75, 186, 0.08);
    flex-shrink: 0;
}

.calc__cta-icon {
    font-size: 40px;
    color: var(--typograph-blue);
}

.calc__cta-content {
    flex: 1;
}

.calc__cta-title {
    margin-bottom: 10px;
    font-size: 28px;
}

.calc__cta-text {
    max-width: 520px;
    font-size: 20px;
    line-height: 160%;
}

.calc__cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: 16px;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 20px;
    line-height: 150%;
    color: #fff;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.calc__cta-btn .material-symbols-rounded {
    font-size: 24px;
}

/* ── No data message ──────────────────────────────── */

.calc__no-data {
    padding: 32px;
    text-align: center;
    color: var(--typograph-black-secondary);
    font-size: 20px;
    background: var(--background-cream-secondary);
    border-radius: 16px;
}

/* ── Dark theme ───────────────────────────────────── */

[data-theme="dark"] .calc__card {
    background: linear-gradient(135deg, #141418 0%, #1c1c24 50%, #141418 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.07),
        inset 0 -1px 0 rgba(255, 255, 255, 0.02);
}

[data-theme="dark"] .calc__card::before {
    background:
        radial-gradient(
            ellipse 50% 40% at 10% 10%,
            rgba(74, 144, 232, 0.06) 0%,
            transparent 100%
        ),
        radial-gradient(
            ellipse 40% 35% at 90% 80%,
            rgba(155, 109, 215, 0.04) 0%,
            transparent 100%
        );
}

[data-theme="dark"] .calc__search,
[data-theme="dark"] .calc__input {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}

[data-theme="dark"] .calc__search:focus,
[data-theme="dark"] .calc__input:focus {
    border-color: var(--typograph-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 232, 0.15);
}

[data-theme="dark"] .calc__search::placeholder,
[data-theme="dark"] .calc__input::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

[data-theme="dark"] .calc__dropdown {
    background: #1c1c24;
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow:
        0 12px 48px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .calc__dropdown::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .calc__dropdown::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .calc__dropdown-item {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .calc__dropdown-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .calc__chip {
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .calc__chip:hover {
    border-color: var(--typograph-blue);
    color: var(--typograph-blue);
    background: rgba(74, 144, 232, 0.08);
}

[data-theme="dark"] .calc__chip--active {
    color: #fff;
    border-color: transparent;
}

[data-theme="dark"] .calc__chip--active:hover {
    color: #fff;
    border-color: transparent;
}

[data-theme="dark"] .calc__step {
    border-bottom-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .calc__result {
    border-top-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .calc__result-total {
    background: linear-gradient(
        135deg,
        rgba(74, 144, 232, 0.1) 0%,
        rgba(74, 144, 232, 0.04) 100%
    );
    border-color: rgba(74, 144, 232, 0.15);
}

[data-theme="dark"] .calc__result-table th {
    color: rgba(255, 255, 255, 0.4);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .calc__result-table td {
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .calc__result-table .calc__row-total td {
    border-top-color: var(--typograph-blue);
}

[data-theme="dark"] .calc__cta {
    background: linear-gradient(
        135deg,
        rgba(20, 20, 24, 0.65) 0%,
        rgba(28, 28, 36, 0.5) 50%,
        rgba(20, 20, 24, 0.65) 100%
    );
    backdrop-filter: blur(24px) saturate(1.3);
    -webkit-backdrop-filter: blur(24px) saturate(1.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

[data-theme="dark"] .calc__cta::before {
    background:
        radial-gradient(
            ellipse 50% 50% at 0% 50%,
            rgba(74, 144, 232, 0.08) 0%,
            transparent 100%
        ),
        radial-gradient(
            ellipse 40% 40% at 100% 50%,
            rgba(155, 109, 215, 0.05) 0%,
            transparent 100%
        );
}

[data-theme="dark"] .calc__cta-icon-wrap {
    background: linear-gradient(
        135deg,
        rgba(74, 144, 232, 0.12),
        rgba(155, 109, 215, 0.08)
    );
    border-color: rgba(74, 144, 232, 0.1);
}

[data-theme="dark"] .calc__no-data {
    background: rgba(255, 255, 255, 0.04);
}

/* ── Responsive ───────────────────────────────────── */

@media screen and (max-width: 920px) {
    .calc__card {
        padding: 32px 24px;
    }
    .calc__cta {
        padding: 36px 24px;
    }
    .calc__cta-inner {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }
    .calc__cta-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .calc__cta-text {
        text-align: center;
    }
    .calc__result-total-value {
        font-size: 36px;
    }
    .calc__result-total {
        flex-wrap: wrap;
        padding: 20px 24px;
    }
    .calc__search,
    .calc__dropdown {
        max-width: 100%;
    }
}

@media screen and (max-width: 600px) {
    .calc-section {
        padding: 32px 0 60px;
    }
    .calc__card {
        padding: 24px 16px;
    }
    .calc__label {
        font-size: 20px;
    }
    .calc__chips {
        flex-direction: column;
    }
    .calc__chip {
        text-align: center;
    }
    .calc__input-group {
        min-width: 100%;
    }
    .calc__submit {
        width: 100%;
        justify-content: center;
    }
    .calc__result-total {
        padding: 16px;
    }
    .calc__result-total-value {
        font-size: 32px;
    }
    .calc__result-table {
        font-size: 20px;
    }
    .calc__result-table th,
    .calc__result-table td {
        padding: 8px 8px;
    }
    .calc__cta {
        padding: 28px 16px;
    }
    .calc__cta-title {
        font-size: 22px;
    }
}