/* ==============================
   AUTH.CSS — Black & Gray Premium
   ============================== */

:root {
    --bg-dark: #000000;
    --bg-surface: #0a0a0a;
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent-primary: #ffffff;
    --accent-secondary: #a1a1aa;
    --text-main: #f4f4f5;
    --text-dim: #71717a;
}

.grid-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.01) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.01) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 40px 20px;
    background-color: #000;
    margin: 0;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.auth-logo {
    width: 44px;
    height: 44px;
    filter: grayscale(1) brightness(1.2) drop-shadow(0 0 10px rgba(255,255,255,0.2)) !important;
}

.auth-title {
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -2px;
}

/* Tabs */
.auth-tabs {
    display: flex;
    width: 100%;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--glass-border);
    border-radius: 14px 14px 0 0;
    overflow: hidden;
}

.auth-tab {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 14px;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
}

.auth-tab.active {
    color: #fff;
    border-bottom-color: #fff;
    background: rgba(255,255,255,0.05);
}

/* Form */
.auth-form {
    width: 100%;
    padding: 32px;
    border-radius: 0 0 20px 20px;
    border-top: none;
}

.form-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 4px;
}

.form-sub {
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: 28px;
}

.field-group {
    margin-bottom: 18px;
    width: 100%;
}

.field-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-dim);
    margin-bottom: 7px;
}

.field-input {
    width: 100%;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 11px 14px;
    color: var(--text-main);
    font-size: 14px;
    font-family: 'Outfit', sans-serif;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.field-input:focus {
    border-color: #fff;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.05);
}

.field-pw-wrap {
    position: relative;
    width: 100%;
}

.pw-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-dim);
}

/* Submit */
.auth-submit {
    width: 100%;
    background: #fff;
    border: none;
    border-radius: 11px;
    padding: 13px;
    color: #000;
    font-weight: 900;
    font-size: 15px;
    font-family: 'Outfit', sans-serif;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
    margin-top: 4px;
    margin-bottom: 16px;
}

.auth-submit:hover { background: #e4e4e7; transform: translateY(-1px); }

.form-hint {
    text-align: center;
    font-size: 13px;
    color: var(--text-dim);
}

.form-hint a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
}

.auth-back {
    margin-top: 20px;
    font-size: 13px;
}

.auth-back a {
    color: var(--text-dim);
    text-decoration: none;
}