:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #64b5f6;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

.tide-card {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

/* Status Message Styles */
.status-container {
    min-height: 40px;
    margin-bottom: 10px;
}

.status-message {
    padding: 10px 15px;
    border-radius: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 0.9rem;
    display: none;
}

.status-message.visible {
    opacity: 1;
    display: block;
}

.status-message.error {
    background-color: #ff5252;
    color: white;
}

.status-message.info {
    background-color: var(--accent);
    color: white;
}

/* Location Display Styles */
.location {
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.location-header {
    display: flex;
    align-items: center;
    gap: 8px;
}

.wave {
    color: var(--accent);
    font-size: 2rem;
    margin-right: 10px;
}

.station-distance {
    margin-left: 34px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Tide Data Styles */
.tide-height {
    font-size: 3.5rem;
    font-weight: bold;
    margin: 20px 0;
}

.unit {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.timestamp {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 15px;
}

/* Loading State Styles */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 20px 0;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--text-secondary);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Error State Styles */
.error-container {
    background-color: rgba(255, 82, 82, 0.1);
    border: 1px solid #ff5252;
    border-radius: 8px;
    padding: 15px;
    margin-top: 10px;
}

.error-message {
    color: #ff5252;
    font-size: 0.9rem;
    text-align: center;
}

/* Button Styles */
.refresh-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    margin-top: 20px;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s ease;
}

.refresh-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.refresh-button:active:not(:disabled) {
    opacity: 0.8;
}

.refresh-button .refresh-icon {
    transition: transform 0.3s ease;
}

.refresh-button:active:not(:disabled) .refresh-icon {
    transform: rotate(180deg);
}

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

/* Mobile Optimizations */
@media (max-width: 480px) {
    .tide-card {
        padding: 20px;
    }
    
    .tide-height {
        font-size: 3rem;
    }
    
    .station-distance {
        margin-left: 30px;
    }
    
    .location {
        font-size: 1.3rem;
    }
    
    .wave {
        font-size: 1.8rem;
    }
}

/* iOS Safari Specific */
@supports (-webkit-touch-callout: none) {
    .refresh-button {
        padding: 14px 24px;
    }
    
    /* Prevent text selection on buttons */
    .refresh-button {
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        user-select: none;
    }
}