/* Dark mode styling with modern auth pages */
:root {
    --bg: #0f1419;
    --card-bg: #1a1f2e;
    --card-border: #2a3142;
    --radius: 18px;
    --shadow: 0 4px 20px rgba(0, 0, 0, .4);
    --accent: #f5a623;
    --accent-dark: #d88f1a;
    --text: #e4e6eb;
    --text-secondary: #8b92a8;
    --input-bg: #252b3b;
    --input-border: #3a4153;
    --input-focus: #f5a623;
    --error: #e74c3c;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Main card for send-url page */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2rem 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 480px;
    text-align: center;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-header h1 {
    font-size: 1.4rem;
    margin: 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: .9rem;
}

.username {
    color: var(--text-secondary);
}

.logout-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color .2s;
}

.logout-link:hover {
    color: var(--accent-dark);
}

h1 {
    font-size: 1.4rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
}

form {
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

input[type="url"] {
    padding: .8rem .9rem;
    border: 1px solid var(--input-border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text);
    transition: border-color .2s;
}

input[type="url"]:focus {
    outline: none;
    border-color: var(--input-focus);
}

button {
    appearance: none;
    border: none;
    padding: .85rem;
    border-radius: var(--radius);
    background: var(--accent);
    color: #0f1419;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s;
}

button:hover {
    background: var(--accent-dark);
}

.success {
    color: var(--accent);
    margin: -.5rem 0 1rem;
}

footer {
    margin-top: 1.25rem;
    color: var(--text-secondary);
    font-size: .8rem;
}

/* Auth card for login/register pages */
.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem 2.5rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 440px;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin: 0 0 .75rem;
    letter-spacing: .5px;
}

.auth-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: .95rem;
    line-height: 1.5;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    text-align: left;
}

.form-group label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: .5px;
    text-transform: uppercase;
}

.form-group input {
    padding: .9rem 1rem;
    border: 2px solid var(--input-border);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text);
    transition: border-color .2s, background .2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--input-focus);
    background: #2a3142;
}

.auth-button {
    margin-top: .5rem;
    padding: 1rem;
    border-radius: 12px;
    background: var(--accent);
    color: #0f1419;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: background .2s, transform .1s;
}

.auth-button:hover {
    background: var(--accent-dark);
}

.auth-button:active {
    transform: scale(0.98);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-link {
    color: #4a9eff;
    text-decoration: none;
    font-size: .9rem;
    font-weight: 600;
    letter-spacing: .3px;
    transition: color .2s;
}

.auth-link:hover {
    color: #6bb0ff;
}

.error-message {
    background: rgba(231, 76, 60, .15);
    border: 1px solid rgba(231, 76, 60, .4);
    color: #ff6b6b;
    padding: .9rem 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    font-size: .9rem;
    text-align: center;
}