:root {
    --bg: #030307;

    --surface: rgba(10, 10, 18, 0.62);
    --surface-light: rgba(255, 255, 255, 0.04);
    --surface-hover: rgba(255, 255, 255, 0.07);

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(168, 85, 247, 0.4);

    --text: #f8fafc;
    --text-secondary: #cbd5e1;
    --muted: #64748b;

    --accent: #a855f7;
    --accent-two: #06b6d4;

    --success: #22c55e;
    --danger: #f87171;

    --radius: 20px;

    --transition:
        all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}


/* =========================
   RESET
   ========================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;

    font-family: "Inter", sans-serif;
    color: var(--text);

    background:
        radial-gradient(
            circle at 10% 10%,
            rgba(168, 85, 247, 0.12),
            transparent 38%
        ),
        radial-gradient(
            circle at 90% 90%,
            rgba(6, 182, 212, 0.1),
            transparent 38%
        ),
        var(--bg);

    overflow-x: hidden;
}


/* =========================
   BACKGROUND
   ========================= */

.background-glow {
    position: fixed;

    width: 500px;
    height: 500px;

    border-radius: 50%;

    filter: blur(120px);

    pointer-events: none;
    opacity: 0.08;

    z-index: -1;
}

.background-glow-one {
    top: -250px;
    left: -200px;

    background: var(--accent);
}

.background-glow-two {
    right: -250px;
    bottom: -250px;

    background: var(--accent-two);
}


/* =========================
   APP
   ========================= */

.weather-app {
    width: min(100% - 32px, 1000px);

    margin: 0 auto;

    padding: 28px 0 30px;
}


/* =========================
   HEADER
   ========================= */

.app-header {
    display: grid;

    grid-template-columns: 1fr auto 1fr;
    align-items: center;

    gap: 20px;

    padding: 18px 20px;

    background: var(--surface);

    border: 1px solid var(--border);
    border-radius: var(--radius);

    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);

    box-shadow:
        0 15px 50px rgba(0, 0, 0, 0.18);
}


.back-button {
    justify-self: start;

    display: inline-flex;
    align-items: center;
    gap: 8px;

    padding: 9px 13px;

    color: var(--text-secondary);

    text-decoration: none;

    font-size: 0.82rem;
    font-weight: 500;

    border: 1px solid var(--border);
    border-radius: 10px;

    background: var(--surface-light);

    transition: var(--transition);
}

.back-button:hover {
    color: var(--text);

    border-color: var(--border-hover);

    transform: translateX(-2px);
}


.app-title {
    display: flex;
    align-items: center;
    gap: 12px;

    min-width: 0;
}

.app-title-icon {
    width: 44px;
    height: 44px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    border-radius: 12px;

    background: rgba(255, 255, 255, 0.04);

    border: 1px solid var(--border);

    font-size: 1.2rem;

    color: var(--accent-two);
}


.app-label {
    display: block;

    margin-bottom: 2px;

    color: var(--accent-two);

    font-size: 0.62rem;
    font-weight: 700;

    letter-spacing: 0.15em;
}


.app-title h1 {
    margin: 0;

    font-size: 1.1rem;
    font-weight: 700;

    white-space: nowrap;
}


.unit-switcher {
    justify-self: end;

    display: flex;

    padding: 3px;

    border-radius: 10px;

    background: var(--surface-light);
    border: 1px solid var(--border);
}


.unit-button {
    min-width: 38px;

    padding: 7px 8px;

    border: 0;
    border-radius: 7px;

    background: transparent;

    color: var(--muted);

    font-family: inherit;
    font-size: 0.75rem;
    font-weight: 600;

    cursor: pointer;

    transition: var(--transition);
}


.unit-button:hover {
    color: var(--text);
}


.unit-button.active {
    background: rgba(255, 255, 255, 0.09);
    color: var(--text);
}


/* =========================
   SEARCH
   ========================= */

.search-section {
    margin-top: 20px;
}


.search-form {
    display: grid;

    grid-template-columns: 1fr auto auto;

    gap: 10px;
}


.search-input {
    display: flex;
    align-items: center;

    min-width: 0;

    padding: 0 14px;

    background: var(--surface);

    border: 1px solid var(--border);
    border-radius: 13px;

    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);

    transition: var(--transition);
}


.search-input:focus-within {
    border-color: var(--border-hover);

    box-shadow:
        0 0 25px rgba(168, 85, 247, 0.08);
}


.search-input > i {
    flex-shrink: 0;

    color: var(--muted);

    font-size: 0.9rem;
}


.search-input input {
    width: 100%;

    min-width: 0;

    padding: 13px 10px;

    border: 0;
    outline: 0;

    background: transparent;

    color: var(--text);

    font: inherit;
    font-size: 0.85rem;
}


.search-input input::placeholder {
    color: var(--muted);
}


.clear-button {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 26px;
    height: 26px;

    flex-shrink: 0;

    border: 0;
    border-radius: 50%;

    background: transparent;

    color: var(--muted);

    cursor: pointer;

    transition: var(--transition);
}


.clear-button:hover {
    background: var(--surface-hover);
    color: var(--text);
}


.search-button,
.location-button {
    border: 0;

    border-radius: 13px;

    font-family: inherit;
    font-weight: 600;

    cursor: pointer;

    transition: var(--transition);
}


.search-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    padding: 0 20px;

    color: #fff;

    background:
        linear-gradient(
            135deg,
            var(--accent),
            var(--accent-two)
        );

    box-shadow:
        0 5px 20px rgba(168, 85, 247, 0.12);
}


.search-button:hover {
    transform: translateY(-2px);

    box-shadow:
        0 8px 25px rgba(168, 85, 247, 0.25);
}


.search-button.loading {
    pointer-events: none;
    opacity: 0.7;
}


.location-button {
    width: 48px;

    color: var(--text-secondary);

    background: var(--surface);

    border: 1px solid var(--border);

    font-size: 0.95rem;
}


.location-button:hover {
    color: var(--accent-two);

    border-color: var(--border-hover);

    transform: translateY(-2px);
}


/* =========================
   STATUS
   ========================= */

.status {
    min-height: 20px;

    margin: 8px 4px 0;

    color: var(--muted);

    font-size: 0.75rem;
}


.status.error {
    color: var(--danger);
}


.status.success {
    color: var(--success);
}


/* =========================
   CONTENT
   ========================= */

.weather-content {
    margin-top: 20px;
}


/* =========================
   EMPTY STATE
   ========================= */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    min-height: 420px;

    padding: 40px 20px;

    text-align: center;

    background: var(--surface);

    border: 1px solid var(--border);
    border-radius: var(--radius);

    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}


.empty-icon {
    width: 90px;
    height: 90px;

    display: flex;
    align-items: center;
    justify-content: center;

    margin-bottom: 20px;

    border-radius: 25px;

    background: var(--surface-light);

    border: 1px solid var(--border);

    color: var(--accent-two);

    font-size: 2.5rem;

    box-shadow:
        0 15px 40px rgba(6, 182, 212, 0.08);
}


.empty-state h2 {
    margin: 0 0 8px;

    font-size: 1.2rem;
}


.empty-state p {
    max-width: 430px;

    margin: 0 0 22px;

    color: var(--muted);

    font-size: 0.85rem;
    line-height: 1.6;
}


.location-main-button {
    display: flex;
    align-items: center;
    gap: 8px;

    padding: 11px 16px;

    border: 1px solid var(--border-hover);
    border-radius: 11px;

    background: rgba(168, 85, 247, 0.08);

    color: var(--text-secondary);

    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;

    cursor: pointer;

    transition: var(--transition);
}


.location-main-button:hover {
    background: rgba(168, 85, 247, 0.14);

    color: #fff;

    transform: translateY(-2px);
}


/* =========================
   CURRENT WEATHER
   ========================= */

.current-card {
    padding: 24px;

    background: var(--surface);

    border: 1px solid var(--border);
    border-radius: var(--radius);

    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);

    box-shadow:
        0 15px 50px rgba(0, 0, 0, 0.15);
}


.current-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;

    gap: 20px;
}


.location-name {
    display: flex;
    align-items: center;
    gap: 7px;

    font-size: 1rem;
    font-weight: 600;
}


.location-name i {
    color: var(--accent-two);
}


.weather-date {
    margin-top: 5px;

    color: var(--muted);

    font-size: 0.72rem;
}


.weather-condition {
    color: var(--text-secondary);

    font-size: 0.8rem;
    text-transform: capitalize;
}


.current-main {
    display: flex;
    align-items: center;

    gap: 22px;

    margin: 35px 0 28px;
}


.weather-icon-large {
    width: 100px;
    height: 100px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    border-radius: 25px;

    background:
        linear-gradient(
            135deg,
            rgba(168, 85, 247, 0.08),
            rgba(6, 182, 212, 0.08)
        );

    border: 1px solid var(--border);

    color: var(--accent-two);

    font-size: 3.2rem;
}


.temperature {
    font-size: clamp(3.5rem, 9vw, 5rem);

    line-height: 0.9;

    font-weight: 700;

    letter-spacing: -0.07em;
}


.feels-like {
    margin-top: 10px;

    color: var(--muted);

    font-size: 0.8rem;
}


/* =========================
   DETAILS
   ========================= */

.weather-details {
    display: grid;

    grid-template-columns: repeat(4, 1fr);

    gap: 10px;
}


.detail-card {
    display: flex;
    align-items: center;

    gap: 10px;

    min-width: 0;

    padding: 13px;

    background: var(--surface-light);

    border: 1px solid var(--border);
    border-radius: 13px;
}


.detail-icon {
    width: 32px;
    height: 32px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    border-radius: 9px;

    background: rgba(168, 85, 247, 0.08);

    color: var(--accent);

    font-size: 0.8rem;
}


.detail-content {
    min-width: 0;
}


.detail-content span {
    display: block;

    color: var(--muted);

    font-size: 0.65rem;
}


.detail-content strong {
    display: block;

    margin-top: 3px;

    color: var(--text-secondary);

    font-size: 0.8rem;

    white-space: nowrap;
}


/* =========================
   SUN
   ========================= */

.sun-info {
    display: flex;
    align-items: center;

    margin-top: 16px;

    padding: 14px 16px;

    background: var(--surface-light);

    border: 1px solid var(--border);
    border-radius: 13px;
}


.sun-item {
    display: flex;
    align-items: center;

    gap: 10px;

    flex: 1;
}


.sun-item > i {
    color: var(--accent-two);

    font-size: 1rem;
}


.sun-item span {
    display: block;

    color: var(--muted);

    font-size: 0.65rem;
}


.sun-item strong {
    display: block;

    margin-top: 2px;

    font-size: 0.8rem;
}


.sun-line {
    width: 1px;
    height: 28px;

    margin: 0 20px;

    background: var(--border);
}


/* =========================
   FORECAST
   ========================= */

.forecast-section {
    margin-top: 20px;

    padding: 24px;

    background: var(--surface);

    border: 1px solid var(--border);
    border-radius: var(--radius);

    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}


.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;

    margin-bottom: 18px;
}


.section-label {
    color: var(--accent-two);

    font-size: 0.6rem;
    font-weight: 700;

    letter-spacing: 0.15em;
}


.section-heading h2 {
    margin: 3px 0 0;

    font-size: 1rem;
}


.section-heading > i {
    color: var(--muted);

    font-size: 1rem;
}


.forecast-grid {
    display: grid;

    grid-template-columns: repeat(5, 1fr);

    gap: 10px;
}


.forecast-card {
    padding: 15px 10px;

    text-align: center;

    background: var(--surface-light);

    border: 1px solid var(--border);
    border-radius: 14px;

    transition: var(--transition);
}


.forecast-card:hover {
    transform: translateY(-3px);

    border-color: var(--border-hover);

    background: var(--surface-hover);
}


.forecast-day {
    color: var(--muted);

    font-size: 0.7rem;
    font-weight: 600;
}


.forecast-date {
    margin-top: 3px;

    color: var(--text-secondary);

    font-size: 0.65rem;
}


.forecast-icon {
    margin: 15px 0;

    color: var(--accent-two);

    font-size: 1.7rem;
}


.forecast-description {
    min-height: 26px;

    color: var(--muted);

    font-size: 0.6rem;

    text-transform: capitalize;
}


.forecast-temperatures {
    margin-top: 10px;

    font-size: 0.8rem;
    font-weight: 600;
}


.forecast-low {
    margin-left: 4px;

    color: var(--muted);
}


/* =========================
   LAST UPDATED
   ========================= */

.last-updated {
    display: flex;
    align-items: center;
    justify-content: center;

    gap: 7px;

    margin-top: 14px;

    color: var(--muted);

    font-size: 0.65rem;
}


.last-updated i {
    font-size: 0.6rem;
}


/* =========================
   FOOTER
   ========================= */

.app-footer {
    display: flex;
    justify-content: center;
    align-items: center;

    gap: 8px;

    margin-top: 20px;

    color: var(--muted);

    font-size: 0.65rem;

    text-align: center;
}


.app-footer a {
    color: var(--text-secondary);

    text-decoration: none;

    transition: var(--transition);
}


.app-footer a:hover {
    color: var(--accent-two);
}


.footer-separator {
    opacity: 0.5;
}


/* =========================
   LOADING
   ========================= */

.loading-spinner {
    width: 15px;
    height: 15px;

    display: inline-block;

    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: #fff;

    border-radius: 50%;

    animation: spin 0.7s linear infinite;
}


@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}


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

@media (max-width: 800px) {

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

    .forecast-grid {
        grid-template-columns: repeat(5, minmax(105px, 1fr));

        overflow-x: auto;

        padding-bottom: 5px;
    }

    .forecast-grid::-webkit-scrollbar {
        height: 4px;
    }

    .forecast-grid::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.1);

        border-radius: 10px;
    }
}


@media (max-width: 650px) {

    .weather-app {
        width: min(100% - 20px, 1000px);

        padding-top: 10px;
    }

    .app-header {
        grid-template-columns: 1fr auto;

        gap: 15px;
    }

    .app-title {
        grid-column: 1 / -1;
        grid-row: 1;

        justify-content: center;
    }

    .back-button {
        grid-column: 1;
        grid-row: 2;
    }

    .unit-switcher {
        grid-column: 2;
        grid-row: 2;
    }

    .search-form {
        grid-template-columns: 1fr auto;

        gap: 8px;
    }

    .search-input {
        grid-column: 1 / -1;
    }

    .search-button {
        min-height: 44px;
    }

    .location-button {
        width: 44px;
        min-height: 44px;
    }

    .current-card,
    .forecast-section {
        padding: 18px;
    }

    .current-main {
        margin: 28px 0 22px;
    }

    .weather-icon-large {
        width: 75px;
        height: 75px;

        border-radius: 20px;

        font-size: 2.3rem;
    }

    .temperature {
        font-size: 3.5rem;
    }

    .weather-details {
        gap: 8px;
    }

    .detail-card {
        padding: 11px;
    }

    .sun-line {
        margin: 0 12px;
    }
}


@media (max-width: 450px) {

    .app-title-icon {
        width: 40px;
        height: 40px;
    }

    .app-title h1 {
        font-size: 1rem;
    }

    .current-top {
        flex-direction: column;
        gap: 8px;
    }

    .weather-condition {
        align-self: flex-start;
    }

    .current-main {
        gap: 14px;
    }

    .weather-icon-large {
        width: 65px;
        height: 65px;

        font-size: 2rem;
    }

    .temperature {
        font-size: 3rem;
    }

    .weather-details {
        grid-template-columns: 1fr 1fr;
    }

    .sun-info {
        flex-direction: column;
        align-items: stretch;

        gap: 12px;
    }

    .sun-item {
        flex: none;
    }

    .sun-line {
        width: 100%;
        height: 1px;

        margin: 0;
    }

    .app-footer {
        flex-wrap: wrap;
    }
}


@media (max-width: 350px) {

    .weather-details {
        grid-template-columns: 1fr;
    }

    .search-button span {
        display: none;
    }

    .search-button {
        width: 48px;
        padding: 0;
    }
}


/* =========================
   REDUCED MOTION
   ========================= */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}