/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #7209b7;
    --text-primary: #2b2d42;
    --text-secondary: #6c757d;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --error-color: #e63946;
    --success-color: #2a9d8f;
    --warning-color: #f4a261;
    --border-radius: 16px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --box-shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeInDown 0.8s ease;
}

.app-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.app-title i {
    font-size: 2.5rem;
}

.app-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Search Section */
.search-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
    animation: fadeIn 0.8s ease 0.2s both;
}

.search-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.input-group {
    display: flex;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.input-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.2rem;
    z-index: 2;
}

.location-input {
    flex: 1;
    padding: 20px 20px 20px 55px;
    border: none;
    font-size: 1.1rem;
    font-weight: 500;
    background-color: #f8f9fa;
    transition: var(--transition);
}

.location-input:focus {
    outline: none;
    background-color: white;
    box-shadow: inset 0 0 0 2px var(--primary-color);
}

.search-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

.search-btn:hover {
    background-color: var(--primary-dark);
}

.location-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.location-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 15px 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.location-btn:hover {
    background-color: #5a08a0;
    transform: translateY(-2px);
}

.divider {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.sample-locations {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.sample-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.sample-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.sample-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 30px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
    animation: fadeIn 0.5s ease;
}

.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin-bottom: 25px;
}

.loading-state p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Error State */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 30px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
    animation: fadeIn 0.5s ease;
}

.error-state i {
    font-size: 4rem;
    color: var(--error-color);
    margin-bottom: 20px;
}

.error-state h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.error-state p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
}

.retry-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.retry-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* Weather Section */
.weather-section {
    animation: fadeInUp 0.8s ease;
}

.weather-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.weather-card:hover {
    box-shadow: var(--box-shadow-hover);
}

.location-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.city-name {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.country {
    font-size: 1.3rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.date-time {
    text-align: right;
}

.date {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.time {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.current-weather {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 30px;
}

.temp-container {
    display: flex;
    align-items: center;
    gap: 30px;
}

.weather-icon-container {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 20px;
    padding: 20px;
}

.weather-icon {
    width: 80px;
    height: 80px;
}

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

.temperature {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 10px;
}

.feels-like {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.weather-details {
    flex: 1;
    max-width: 400px;
}

.weather-condition {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 25px;
}

.weather-meta {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.meta-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.meta-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.meta-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Additional Info */
.additional-info {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 12px;
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-5px);
    background-color: #f0f2f5;
}

.info-card i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.info-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.info-value {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Initial State */
.initial-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 30px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    animation: fadeIn 0.8s ease;
}

.initial-content i {
    font-size: 5rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.initial-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.initial-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 30px;
}

.hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: #f0f7ff;
    padding: 15px 20px;
    border-radius: 10px;
    max-width: 500px;
}

.hint i {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.hint span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 25px;
    border-top: 1px solid #e0e0e0;
    color: var(--text-secondary);
    font-size: 1rem;
    animation: fadeIn 0.8s ease 0.4s both;
}

.developer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.developer-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.api-note {
    font-size: 0.9rem;
    margin-top: 10px;
    opacity: 0.8;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-title {
        font-size: 2.2rem;
    }
    
    .search-section {
        padding: 25px;
    }
    
    .input-group {
        flex-direction: column;
        border-radius: 12px;
        overflow: hidden;
    }
    
    .location-input {
        padding: 18px 18px 18px 50px;
        width: 100%;
    }
    
    .search-btn {
        padding: 18px;
        justify-content: center;
        width: 100%;
    }
    
    .location-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .divider {
        text-align: center;
    }
    
    .location-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .date-time {
        text-align: left;
    }
    
    .current-weather {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .temp-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .temperature {
        font-size: 3.5rem;
    }
    
    .weather-card {
        padding: 25px;
    }
    
    .additional-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .app-title {
        font-size: 1.8rem;
    }
    
    .city-name {
        font-size: 2rem;
    }
    
    .temperature {
        font-size: 3rem;
    }
    
    .additional-info {
        grid-template-columns: 1fr;
    }
    
    .weather-meta {
        flex-direction: column;
        gap: 20px;
    }
}