/* Auth Page - Login & Signup */
:root {
    --color-dark: #020617;
    --color-mid: #0f172a;
    --color-white: #f8fafc;
    --royal-blue: #3b82f6;
    --royal-blue-dark: #1d4ed8;
    --royal-blue-light: #60a5fa;
    --color-accent: #38bdf8;
    --color-muted: rgba(248, 250, 252, 0.65);
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
}

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

body {
    font-family: var(--font-primary);
    background: var(--color-dark);
    color: var(--color-white);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-wrapper {
    width: 100%;
    max-width: 480px;
}

.auth-container {
    background: var(--color-mid);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.auth-logo {
    display: block;
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo-img {
    height: 48px;
    width: auto;
}

/* Tabs */
.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 28px;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: 10px;
}

.auth-tab {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    color: var(--color-muted);
    font-family: var(--font-primary);
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.auth-tab:hover {
    color: var(--color-white);
}

.auth-tab.active {
    background: var(--royal-blue);
    color: white;
}

/* Forms */
.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="file"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-white);
    font-family: var(--font-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input::placeholder {
    color: rgba(248, 250, 252, 0.4);
}

.form-group input:focus {
    outline: none;
    border-color: var(--royal-blue);
}

.form-group input[type="file"] {
    padding: 10px 12px;
    cursor: pointer;
}

.form-hint {
    display: block;
    font-size: 12px;
    color: var(--color-muted);
    margin-top: 6px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Signature */
.signature-wrapper {
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}

#signatureCanvas {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 150px;
    cursor: crosshair;
    touch-action: none;
}

.signature-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-clear-signature {
    padding: 8px 16px;
    background: #dc2626;
    color: white;
    border: none;
    border-radius: 6px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-clear-signature:hover {
    background: #b91c1c;
}

.signature-hint {
    font-size: 13px;
    color: var(--color-muted);
}

/* Submit Button */
.btn-submit {
    width: 100%;
    padding: 14px;
    margin-top: 8px;
    background: var(--royal-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-submit:hover {
    background: var(--royal-blue-dark);
}

.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
}

.form-message.error {
    display: block;
    background: rgba(220, 38, 38, 0.2);
    color: #fca5a5;
    border: 1px solid rgba(220, 38, 38, 0.3);
}

.form-message.success {
    display: block;
    background: rgba(34, 197, 94, 0.2);
    color: #86efac;
    border: 1px solid rgba(34, 197, 94, 0.3);
}