:root {
    --font-primary: 'Outfit', sans-serif;

    /* Light Mode Variables */
    --bg-gradient-light: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    --card-bg-light: rgba(255, 255, 255, 0.4);
    --card-border-light: rgba(255, 255, 255, 0.6);
    --text-primary-light: #2d3748;
    --text-secondary-light: #4a5568;
    --input-bg-light: rgba(255, 255, 255, 0.6);
    --hover-bg-light: rgba(255, 255, 255, 0.8);

    /* Dark Mode Variables */
    --bg-gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --card-bg-dark: rgba(30, 41, 59, 0.5);
    --card-border-dark: rgba(255, 255, 255, 0.1);
    --text-primary-dark: #f8fafc;
    --text-secondary-dark: #cbd5e1;
    --input-bg-dark: rgba(30, 41, 59, 0.6);
    --hover-bg-dark: rgba(51, 65, 85, 0.8);

    /* Default Variables (Light) */
    --bg-gradient: var(--bg-gradient-light);
    --card-bg: var(--card-bg-light);
    --card-border: var(--card-border-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --input-bg: var(--input-bg-light);
    --hover-bg: var(--hover-bg-light);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --transition: all 0.3s ease;
}

body.dark-mode {
    --bg-gradient: var(--bg-gradient-dark);
    --card-bg: var(--card-bg-dark);
    --card-border: var(--card-border-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --input-bg: var(--input-bg-dark);
    --hover-bg: var(--hover-bg-dark);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Dynamic Weather Backgrounds */
body.bg-clear {
    background: linear-gradient(135deg, #56CCF2 0%, #2F80ED 100%);
}

body.bg-clouds {
    background: linear-gradient(135deg, #8e9eab 0%, #eef2f3 100%);
}

body.bg-rain {
    background: linear-gradient(135deg, #4b6cb7 0%, #182848 100%);
}

body.bg-snow {
    background: linear-gradient(135deg, #E0EAFC 0%, #CFDEF3 100%);
}

body.bg-thunderstorm {
    background: linear-gradient(135deg, #141E30 0%, #243B55 100%);
}

/* For Dark mode overrides */
body.dark-mode.bg-clear {
    background: linear-gradient(135deg, #1a2980 0%, #26d0ce 100%);
}

body.dark-mode.bg-clouds {
    background: linear-gradient(135deg, #304352 0%, #d7d2cc 100%);
}

body.dark-mode.bg-rain {
    background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
}

body.dark-mode.bg-snow {
    background: linear-gradient(135deg, #3E5151 0%, #DECBA4 100%);
}

.app-container {
    width: 100%;
    max-width: 900px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    min-height: 100vh;
}

/* Glassmorphism utility */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding-top: 1rem;
    flex-wrap: wrap;
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-logo {
    width: 50px;
    height: auto;
    object-fit: contain;
}

.brand-name {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.search-container {
    display: flex;
    align-items: center;
    background: var(--input-bg);
    backdrop-filter: blur(12px);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    flex-grow: 1;
    max-width: 500px;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
    position: relative;
    z-index: 1000;
}

.search-container:focus-within {
    background: var(--card-bg);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.search-icon {
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

#city-input {
    border: none;
    background: transparent;
    outline: none;
    flex-grow: 1;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    padding: 0.5rem 0;
}

#city-input::placeholder {
    color: var(--text-secondary);
}

.autocomplete-wrapper {
    position: relative;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.suggestions-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 0.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    list-style: none;
    max-height: 250px;
    overflow-y: auto;
    z-index: 1000;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.suggestion-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    transition: background-color 0.2s ease;
    font-size: 0.95rem;
}

.suggestion-item:hover {
    background: var(--hover-bg);
}

.suggestion-item .material-symbols-rounded {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.suggestion-item .country-code {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-left: auto;
}

.icon-btn {
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: var(--text-primary);
    transition: var(--transition);
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.icon-btn:hover {
    background: var(--hover-bg);
    transform: translateY(-2px);
}

/* Main Dashboard */
.weather-dashboard {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    animation: fadeIn 0.5s ease;
}

.current-weather {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 3rem 2rem;
}

.weather-header {
    margin-bottom: 2rem;
}

.city-name {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.current-date {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.weather-main {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.weather-icon-main {
    width: 150px;
    height: 150px;
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.2));
    animation: float 6s ease-in-out infinite;
}

.temp-container {
    display: flex;
    align-items: flex-start;
}

.temperature {
    font-size: 6rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -3px;
}

.temp-unit {
    font-size: 2rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

.weather-condition {
    font-size: 1.5rem;
    font-weight: 500;
    text-transform: capitalize;
    margin-top: 1rem;
    color: var(--text-secondary);
}

/* Weather Details Grid */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.detail-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
}

.detail-card .material-symbols-rounded {
    font-size: 2.5rem;
    color: var(--text-secondary);
}

.detail-info {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.detail-value {
    font-size: 1.25rem;
    font-weight: 600;
}

/* 5-Day Forecast */
.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    margin-left: 0.5rem;
}

.forecast-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.forecast-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem 1rem;
}

.forecast-item:hover {
    transform: translateY(-5px);
    background: var(--hover-bg);
}

.forecast-day {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.forecast-icon {
    width: 60px;
    height: 60px;
    margin: 0.5rem 0;
}

.forecast-temp {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Utilities states */
.hidden {
    display: none !important;
}

.intro-state,
.loading-state,
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    text-align: center;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border-radius: 24px;
    border: 1px solid var(--card-border);
    margin-top: 2rem;
    box-shadow: var(--shadow);
}

.intro-icon {
    font-size: 5rem;
    color: #3b82f6;
    margin-bottom: 1rem;
    animation: float 4s ease-in-out infinite;
}

.intro-state h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.intro-state p {
    color: var(--text-secondary);
    max-width: 400px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--card-border);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

.error-icon {
    font-size: 4rem;
    color: #ef4444;
    margin-bottom: 1rem;
}

#error-message {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Animations */
@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-15px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsiveness */
@media (max-width: 768px) {
    .city-name {
        font-size: 2.5rem;
    }

    .temperature {
        font-size: 5rem;
    }

    .weather-main {
        gap: 1rem;
    }

    .weather-icon-main {
        width: 120px;
        height: 120px;
    }

    .app-container {
        padding: 1rem;
        gap: 1rem;
    }

    .header {
        flex-direction: column;
        align-items: stretch;
        position: relative;
    }

    .brand-container {
        justify-content: center;
        margin-bottom: 0.5rem;
    }

    .theme-toggle-btn {
        position: absolute;
        top: 1rem;
        right: 1rem;
    }

    .search-container {
        max-width: 100%;
        width: 100%;
    }
}