/* 
   ==============================
   SodaCost - Modern Stylesheet
   ==============================
*/

/* --- THEME & COLOR PALETTE (CSS Variables) --- */
:root {
    --bg-color: #f4f6f9;
    --card-bg-color: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e0e5ec;
    --accent-color: #3498db;
    --danger-color: #e74c3c;
    --success-color: #2ecc71;
    --best-value-border: var(--success-color);
    --best-value-bg: #e8f8f0;
    --header-bg: linear-gradient(135deg, #5d9cec 0%, #34495e 100%);
    --shadow-color: rgba(44, 62, 80, 0.1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1a1a1a;
        --card-bg-color: #2c2c2e;
        --text-primary: #ecf0f1;
        --text-secondary: #95a5a6;
        --border-color: #48484a;
        --best-value-border: var(--success-color);
        --best-value-bg: #1e3a2b;
        --header-bg: linear-gradient(135deg, #2c3e50 0%, #1a1a1a 100%);
        --shadow-color: rgba(0, 0, 0, 0.3);
    }
}

/* --- BASE & RESET --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- LAYOUT --- */
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    transition: transform 0.3s ease;
}

/* --- HEADER --- */
header {
    padding: 2rem 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: #ffffff;
    background: var(--header-bg);
    border-radius: 16px;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
}

header p {
    font-size: 1rem;
    opacity: 0.9;
}

/* --- GRID & ITEMS --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2rem 0;
}

.drink-item {
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1rem;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 4px 12px var(--shadow-color);
    position: relative;
}

.drink-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.drink-item.best-value {
    border: 2px solid var(--best-value-border);
    background: var(--best-value-bg);
}

.drink-item.best-value::before {
    content: "🏆";
    position: absolute;
    top: -12px;
    right: -12px;
    background: var(--success-color);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.drink-item.wide {
    grid-column: 1 / -1;
}

/* --- ITEM CONTENT --- */
.drink-info {
    margin-bottom: 1rem;
}

.drink-info h3 {
    margin: 0 0 5px 0;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    fill: var(--accent-color);
}

.drink-info .description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

/* --- INPUTS & RESULTS --- */
.input-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 16px;
    -webkit-appearance: none;
    transition: all 0.2s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.input-group .result {
    font-weight: 600;
    white-space: nowrap;
    font-size: 1rem;
    color: var(--text-primary);
}

.custom-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr auto;
    gap: 10px;
}

/* --- FOOTER --- */
footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 2rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

#clear-all, #debug-reload {
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

#clear-all:hover, #debug-reload:hover {
    transform: translateY(-2px);
}

#clear-all {
    background-color: var(--danger-color);
    color: white;
}

#clear-all:hover {
    background-color: #c0392b;
}

#debug-reload {
    background-color: var(--text-secondary);
    color: var(--card-bg-color);
}

#debug-reload:hover {
    background-color: var(--text-primary);
}


/* --- iPhone Safe Area --- */
@supports (padding-top: constant(safe-area-inset-top)) {
    body {
        padding-top: constant(safe-area-inset-top);
        padding-bottom: constant(safe-area-inset-bottom);
    }
}
@supports (padding-top: env(safe-area-inset-top)) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
}

#update-notification {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #2d3748; /* A darker, more modern background */
    color: white;
    padding: 1rem;
    border-radius: 0.5rem;
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
    opacity: 1;
}

#update-notification.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(150%);
}

#reload-button {
    background-color: #4299e1; /* A nice blue */
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: bold;
}

#reload-button:hover {
    background-color: #3182ce;
}

.savings-badge {
    position: absolute;
    top: 0px;
    right: 35px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
    backdrop-filter: blur(5px);
}