:root {
    --bg-color: #2D2D2D; /* Match logo background */
    --surface-color: rgba(0, 0, 0, 0.2); /* Semi-transparent over bg */
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --accent-primary: #00F0FF; /* Bright Neon Cyan */
    --accent-hover: #00C8D6;
    --error: #ff4d4d;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(0, 240, 255, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    margin-top: 20px;
    margin-bottom: 40px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

.brand-logo {
    max-width: 120px;
    margin-bottom: 15px;
}

h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 5px;
    background: linear-gradient(90deg, #fff, var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.input-group {
    margin-bottom: 20px;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.input-group input[type="text"],
.input-group input[type="tel"] {
    width: 100%;
    padding: 14px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 16px;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.2);
}

.invalid-field {
    border-color: var(--error) !important;
    box-shadow: 0 0 0 2px rgba(255, 77, 77, 0.2) !important;
}

/* Schedule Grid */
.schedule-section {
    margin-top: 30px;
}

.schedule-section h2 {
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--glass-border);
}

.day-card {
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.day-card:hover {
    border-color: rgba(0, 240, 255, 0.3);
}

.day-card h3 {
    font-size: 16px;
    color: var(--accent-primary);
    margin-bottom: 12px;
}

.shifts {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.shift-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.03);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.shift-option:hover {
    background: rgba(255, 255, 255, 0.06);
}

.shift-option input[type="checkbox"] {
    display: none;
}

.custom-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-secondary);
    border-radius: 4px;
    margin-right: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease;
}

.shift-option input[type="checkbox"]:checked + .custom-checkbox {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.shift-option input[type="checkbox"]:checked + .custom-checkbox::after {
    content: '✓';
    color: #000;
    font-size: 14px;
    font-weight: bold;
}

.shift-option input[type="checkbox"]:checked ~ .shift-time {
    color: var(--text-primary);
    font-weight: 500;
}

.shift-time {
    color: var(--text-secondary);
    font-size: 15px;
    transition: all 0.2s ease;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--accent-primary);
    color: #000;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    margin-top: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
}

.submit-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 240, 255, 0.4);
}

/* Success Message */
.hidden { display: none !important; }

.success-message {
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    color: var(--accent-primary);
    font-size: 28px;
}

.success-message h2 {
    color: var(--accent-primary);
    margin-bottom: 10px;
}