/* ===== CSS Variables ===== */
:root {
    /* Light Theme */
    --light-bg-top: #1A237E;
    --light-bg-bottom: #0D47A1;
    --light-text-primary: #FFFFFF;
    --light-text-secondary: #B3E5FC;
    --light-card-bg: rgba(30, 136, 229, 0.2);
    --light-card-border: rgba(100, 181, 246, 0.3);
    
    /* Dark Theme */
    --dark-bg-top: #121212;
    --dark-bg-bottom: #0d1b2a;
    --dark-text-primary: #e0e1dd;
    --dark-text-secondary: #778da9;
    --dark-card-bg: rgba(26, 35, 56, 0.7);
    --dark-card-border: rgba(65, 90, 119, 0.5);
    
    /* Common */
    --text-accent: #FFD600;
    --button-bg: #FFC107;
    --button-text: #212121;
    --danger: #FF5252;
    --success: #4CAF50;
    --warning: #FF9800;
    --text-shadow: 0px 2px 4px rgba(0, 0, 0, 0.2);
    --box-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 16px;
}

/* ===== Base Styles ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Tajawal', 'Segoe UI', sans-serif;
    background: linear-gradient(to bottom, var(--light-bg-top), var(--light-bg-bottom));
    background-attachment: fixed;
    color: var(--light-text-primary);
    min-height: 100vh;
    padding: 15px;
    line-height: 1.6;
    transition: var(--transition);
}

body.dark-theme {
    background: linear-gradient(to bottom, var(--dark-bg-top), var(--dark-bg-bottom));
    color: var(--dark-text-primary);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 20px;
    position: relative;
}

/* زر التثبيت */
.install-button {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 50px;
    padding: 12px 20px;
    font-weight: bold;
    z-index: 1000;
    box-shadow: var(--box-shadow);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.install-button:hover {
    background: #ffb300;
    transform: translateY(-2px);
}

/* ===== Header Styles ===== */
.app-header {
    text-align: center;
    margin-bottom: 20px;
    padding: 50px 10px 20px 10px;
    position: relative;
}

.app-header h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.header-subtitle {
    font-size: 1rem;
    color: var(--light-text-secondary);
    opacity: 0.9;
    margin-bottom: 5px;
}

.dark-theme .header-subtitle {
    color: var(--dark-text-secondary);
}

.current-datetime {
    font-size: 0.9rem;
    color: var(--light-text-secondary);
    margin-top: 5px;
}

.dark-theme .current-datetime {
    color: var(--dark-text-secondary);
}

/* ===== Controls ===== */
.app-controls {
    position: absolute;
    top: 15px;
    left: 15px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* ===== Navigation Tabs ===== */
.tabs {
    display: flex;
    justify-content: center;
    margin: 15px 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    overflow: hidden;
    flex-wrap: wrap;
}

.tab {
    padding: 10px 15px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    flex: 1;
    min-width: 90px;
    font-size: 0.9rem;
}

.tab.active {
    background: var(--button-bg);
    color: var(--button-text);
    font-weight: bold;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===== Weather Cards ===== */
.weather-card {
    background-color: var(--light-card-bg);
    border: 1px solid var(--light-card-border);
    border-radius: var(--border-radius);
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.dark-theme .weather-card {
    background-color: var(--dark-card-bg);
    border: 1px solid var(--dark-card-border);
}

.weather-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.current-weather-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.weather-loading {
    text-align: center;
    padding: 30px 0;
}

.weather-loading i {
    font-size: 2rem;
    margin-bottom: 15px;
}

/* ===== Forecast Section ===== */
.section-title {
    font-size: 1.3rem;
    margin: 20px 0 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dark-theme .section-title {
    border-bottom: 2px solid rgba(255, 255, 255, 0.05);
}

.forecast-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.forecast-day {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 12px;
    text-align: center;
    transition: var(--transition);
}

.dark-theme .forecast-day {
    background: rgba(255, 255, 255, 0.05);
}

.forecast-day:hover {
    background: rgba(255, 255, 255, 0.15);
}

.forecast-day h4 {
    margin-bottom: 8px;
    font-size: 1rem;
}

.forecast-temp {
    font-size: 1.1rem;
    font-weight: bold;
    margin: 8px 0;
}

.forecast-day img {
    width: 50px;
    height: 50px;
    margin: 0 auto;
}

/* ===== Map Section ===== */
.map-container {
    height: 300px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
}

#weather-map {
    width: 100%;
    height: 100%;
}

/* ===== Unit Toggle ===== */
.unit-toggle {
    display: flex;
    justify-content: center;
    margin: 15px 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    padding: 4px;
    width: fit-content;
    margin: 15px auto;
}

.unit-btn {
    padding: 6px 20px;
    border: none;
    background: transparent;
    color: white;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.unit-btn.active {
    background: var(--button-bg);
    color: var(--button-text);
}

/* ===== Weather Details ===== */
.weather-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.detail-card {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 12px;
    text-align: center;
}

.dark-theme .detail-card {
    background: rgba(255, 255, 255, 0.05);
}

.detail-card i {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--text-accent);
}

/* ===== Favorites Section ===== */
.search-container {
    display: flex;
    gap: 10px;
    margin: 15px 0;
    align-items: stretch;
}

#cityInput {
    flex-grow: 1;
    border: 1px solid var(--light-card-border);
    background: var(--light-card-bg);
    border-radius: 50px;
    padding: 10px 15px;
    color: var(--light-text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
    height: auto;
}

.dark-theme #cityInput {
    border: 1px solid var(--dark-card-border);
    background: var(--dark-card-bg);
    color: var(--dark-text-primary);
}

#cityInput:focus {
    border-color: var(--button-bg);
}

#addCityBtn {
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 50px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
    height: auto;
    white-space: nowrap;
}

#addCityBtn:hover {
    background: #ffb300;
    transform: scale(1.03);
}

#city-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.city-card {
    background-color: var(--light-card-bg);
    border: 1px solid var(--light-card-border);
    border-radius: var(--border-radius);
    padding: 15px;
    position: relative;
    transition: var(--transition);
}

.dark-theme .city-card {
    background-color: var(--dark-card-bg);
    border: 1px solid var(--dark-card-border);
}

.city-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.remove-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255, 82, 82, 0.2);
    border: none;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    color: var(--light-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.dark-theme .remove-btn {
    color: var(--dark-text-primary);
}

.remove-btn:hover {
    background: var(--danger);
    transform: scale(1.1);
}

.city-info {
    margin-top: 25px;
}

.city-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.country-name {
    font-size: 0.9rem;
    color: var(--light-text-secondary);
    margin-bottom: 10px;
}

.dark-theme .country-name {
    color: var(--dark-text-secondary);
}

.city-weather {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.city-temp {
    font-size: 1.5rem;
    font-weight: bold;
}

.city-icon {
    width: 50px;
    height: 50px;
}

/* ===== Placeholder ===== */
.placeholder {
    text-align: center;
    padding: 30px 20px;
    color: var(--light-text-secondary);
    grid-column: 1 / -1;
}

.dark-theme .placeholder {
    color: var(--dark-text-secondary);
}

.placeholder i {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
    color: var(--light-text-secondary);
}

.dark-theme .placeholder i {
    color: var(--dark-text-secondary);
}

/* ===== Footer ===== */
footer {
    text-align: center;
    padding: 20px 0 15px;
    font-size: 0.85rem;
    color: var(--light-text-secondary);
    opacity: 0.8;
    margin-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.dark-theme footer {
    color: var(--dark-text-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.app-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.app-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.app-info p {
    font-size: 0.9rem;
    color: var(--light-text-secondary);
}

.dark-theme .app-info p {
    color: var(--dark-text-secondary);
}

.app-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.copyright {
    font-size: 0.8rem;
    margin-top: 10px;
}

/* ===== تحسينات للهاتف - تنبؤات ===== */
@media (max-width: 768px) {
    .forecast-container {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 8px;
    }
    
    .forecast-day {
        padding: 8px;
    }
    
    .forecast-day h4 {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }
    
    .forecast-temp {
        font-size: 1rem;
        margin: 5px 0;
    }
    
    .forecast-day p {
        font-size: 0.8rem;
    }
    
    .forecast-day img {
        width: 40px;
        height: 40px;
    }
    
    /* زر التثبيت للهواتف */
    .install-button {
        bottom: 10px;
        right: 10px;
        padding: 10px 15px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    /* تحسينات الهيدر لمنع التداخل */
    .app-header {
        padding-top: 60px;
        padding-bottom: 10px;
    }
    
    .app-controls {
        top: 10px;
        left: 10px;
        right: 10px;
        justify-content: space-between;
    }
    
    .app-header h1 {
        font-size: 1.3rem;
        padding-top: 0;
        margin-top: 5px;
    }
    
    .header-subtitle {
        font-size: 0.85rem;
    }
    
    .current-datetime {
        font-size: 0.8rem;
    }
    
    /* تحسينات التبويبات */
    .tab {
        padding: 10px 12px;
        font-size: 0.85rem;
        min-width: 80px;
    }
    
    /* تحسينات التنبؤات */
    .forecast-container {
        overflow-x: auto;
        display: flex;
        padding-bottom: 10px;
        grid-template-columns: none;
        -webkit-overflow-scrolling: touch;
    }
    
    .forecast-day {
        min-width: 100px;
        margin-right: 8px;
        flex-shrink: 0;
    }
    
    /* شريط التمرير للتنبؤات */
    .forecast-container::-webkit-scrollbar {
        height: 5px;
    }
    
    .forecast-container::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
    }
    
    .forecast-container::-webkit-scrollbar-thumb {
        background: var(--button-bg);
        border-radius: 10px;
    }
    
    /* تحسينات عامة للهاتف */
    .container {
        padding: 10px;
    }
    
    .weather-card {
        padding: 12px;
    }
    
    .map-container {
        height: 250px;
    }
    
    .city-card {
        padding: 12px;
    }
    
    .city-name {
        font-size: 1.1rem;
    }
    
    .city-temp {
        font-size: 1.3rem;
    }
    
    .weather-details-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    /* تحسينات حقل البحث وزر الإضافة للهواتف */
    .search-container {
        flex-direction: column;
    }
    
    #addCityBtn {
        width: 100%;
        justify-content: center;
        padding: 12px;
    }
    
    /* زر التثبيت للهواتف الصغيرة */
    .install-button {
        bottom: 5px;
        right: 5px;
        padding: 8px 12px;
        font-size: 0.8rem;
    }
}