/* CSS Variables - we:Ops Brand Colors */
:root {
    --primary-color: #3EB489;
    --primary-hover: #35a07a;
    --primary-light: #4fc99d;
    --secondary-color: #4a4a4a;
    --secondary-hover: #3a3a3a;
    --success-color: #3EB489;
    --error-color: #e74c3c;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-dark: #4a4a4a;
    --border-radius: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #3EB489 0%, #2d8a69 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    text-align: center;
    padding: 30px 0 25px;
    color: white;
}

header .logo {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 16px;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 6px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    letter-spacing: 0.5px;
}

header .subtitle {
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 300;
}

/* Main Content */
main {
    flex: 1;
}

/* Cards */
.card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 24px;
    text-align: center;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: var(--secondary-hover);
}

.btn-link {
    background: none;
    color: var(--primary-color);
    padding: 10px;
    font-weight: 500;
}

.btn-link:hover {
    text-decoration: underline;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn .icon {
    font-size: 1.2rem;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* QR Scanner */
#qr-reader {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 16px;
}

#qr-reader video {
    width: 100%;
    border-radius: 8px;
}

.hint {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

/* QR Code Display */
#qr-code-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

#qr-code-container canvas {
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.code-display {
    background: #f1f3f4;
    padding: 12px 16px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    text-align: center;
    word-break: break-all;
    margin-bottom: 20px;
}

/* Success & Error States */
.success-icon,
.error-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 20px;
}

.success-icon {
    background: var(--success-color);
    color: white;
}

.error-icon {
    background: var(--error-color);
    color: white;
}

#success-section p,
#error-section p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Loader */
.loader {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer */
footer {
    text-align: center;
    padding: 20px 0;
    color: rgba(255, 255, 255, 0.8);
}

footer p {
    margin-bottom: 8px;
}

.admin-link {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    text-decoration: none;
}

.admin-link:hover {
    color: white;
    text-decoration: underline;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 520px) {
    .container {
        padding: 16px;
    }

    header {
        padding: 30px 0 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    .card {
        padding: 24px 20px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a2e25;
        --card-background: #1e3a2f;
        --text-primary: #edf2f4;
        --text-secondary: #adb5bd;
    }

    body {
        background: linear-gradient(135deg, #1a2e25 0%, #0d1f17 100%);
    }

    .card {
        background: var(--card-background);
    }

    .card h2 {
        color: var(--text-primary);
    }

    .form-group input,
    .form-group select {
        background: #152a22;
        border-color: #2d5a47;
        color: var(--text-primary);
    }

    .code-display {
        background: #152a22;
        color: var(--text-primary);
    }

    .btn-link {
        color: var(--primary-light);
    }
}