/* Bitcraft Timer Styles */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #059669;
    --warning: #d97706;
    --background: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

header {
    text-align: center;
    padding: 2rem 0;
}

h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.input-card,
.result-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-group {
    margin-bottom: 1.25rem;
}

.input-group:last-child {
    margin-bottom: 0;
}

.example-image {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgb(0 0 0 / 0.08);
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

input,
select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    background: var(--surface);
    color: var(--text);
    transition: all 0.2s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

input:hover,
select:hover {
    border-color: var(--secondary);
}

.help-label-totalEffort {
    color: #ED1C24;
}

.help-label-toolPower {
    color: #FF7F27;
}

.help-label-delay {
    color: #A349A4;
}

.help-label-tier {
    color: #22B14C;
}

.calculate-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.calculate-btn:active {
    transform: translateY(0);
}

.result-card {
    display: none;
}

.result-card.show {
    display: block;
    animation: slideIn 0.4s ease;
}

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

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

.time-display {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    text-align: center;
    margin: 1rem 0;
}

.seconds-display {
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.stamina-alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    font-weight: 500;
    display: none;
}

.stamina-alert.show {
    display: block;
}

.stamina-alert.success {
    background: rgb(34 197 94 / 0.1);
    border: 1px solid rgb(34 197 94 / 0.2);
    color: var(--success);
}

.stamina-alert.warning {
    background: rgb(217 119 6 / 0.1);
    border: 1px solid rgb(217 119 6 / 0.2);
    color: var(--warning);
}

.calculation-steps {
    background: var(--background);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-top: 1.5rem;
}

.step {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

.step:last-child {
    border-bottom: none;
}

.step-label {
    font-weight: 600;
    color: var(--text-muted);
}

.step-value {
    font-weight: 700;
    color: var(--text);
}

.error {
    background: rgb(239 68 68 / 0.1);
    border: 1px solid rgb(239 68 68 / 0.2);
    color: #dc2626;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-weight: 500;
    display: none;
}

.error.show {
    display: block;
}

.icon {
    width: 1.25rem;
    height: 1.25rem;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

@media (max-width: 767px) {
    .container {
        padding: 0.5rem;
    }

    .input-card,
    .result-card {
        padding: 1rem;
    }

    .time-display {
        font-size: 2rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #0f172a;
        --surface: #1e293b;
        --text: #f1f5f9;
        --text-muted: #94a3b8;
        --border: #334155;
    }
}