/* =============================================
   GALAXY SMART SYSTEM – AUTH CSS
   Login & Register Page Styles
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700;800&display=swap');

:root {
    --bg: #060B18;
    --surface: #0D1426;
    --card: rgba(13, 20, 38, 0.9);
    --blue: #00C2FF;
    --purple: #7A5FFF;
    --cyan: #00FFD1;
    --grad: linear-gradient(135deg, #00C2FF 0%, #7A5FFF 100%);
    --grad45: linear-gradient(45deg, #00C2FF 0%, #7A5FFF 100%);
    --text: #FFFFFF;
    --muted: #9AA5BE;
    --border: rgba(0, 194, 255, 0.12);
    --glow: 0 0 25px rgba(0, 194, 255, 0.3);
    --error: #FF4B4B;
    --success: #00D084;
}

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

html {
    font-size: 16px;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Background */
.auth-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 15% 30%, rgba(0, 194, 255, 0.07) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 85% 70%, rgba(122, 95, 255, 0.09) 0%, transparent 60%),
        var(--bg);
}

.auth-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 194, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 194, 255, 0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* ─── Auth Card Container ────────────────────── */
.auth-wrapper {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 480px;
    padding: 20px;
}

.auth-card {
    background: var(--card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px 44px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5), var(--glow);
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--grad);
}

/* ─── Logo ──────────────────────────────────── */
.auth-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    margin-bottom: 36px;
}

.auth-logo-icon {
    width: 42px;
    height: 42px;
    background: var(--grad45);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--glow);
}

.auth-logo-text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
    background: var(--grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ─── Tabs ──────────────────────────────────── */
.auth-tabs {
    display: flex;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 32px;
    gap: 4px;
}

.auth-tab {
    flex: 1;
    padding: 11px;
    text-align: center;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 9px;
    cursor: pointer;
    color: var(--muted);
    border: none;
    background: none;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s;
}

.auth-tab.active {
    background: var(--grad45);
    color: #fff;
    box-shadow: 0 4px 16px rgba(0, 194, 255, 0.25);
}

/* ─── Form ──────────────────────────────────── */
.auth-panel {
    display: none;
}

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

.auth-panel h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.auth-panel .subtitle {
    color: var(--muted);
    font-size: 0.88rem;
    margin-bottom: 28px;
    line-height: 1.6;
}

.auth-form-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.auth-form-group label {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.auth-form-group input {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 13px 16px;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s;
    width: 100%;
}

.auth-form-group input:focus {
    border-color: var(--blue);
    background: rgba(0, 194, 255, 0.04);
    box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.1);
}

.auth-form-group input.error {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(255, 75, 75, 0.1);
}

.auth-form-group .err-msg {
    font-size: 0.74rem;
    color: var(--error);
    display: none;
}

.auth-form-group.has-error .err-msg {
    display: block;
}

/* Forgot */
.auth-forgot {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 24px;
    margin-top: -10px;
}

.auth-forgot a {
    font-size: 0.78rem;
    color: var(--blue);
    text-decoration: none;
    transition: opacity 0.3s;
}

.auth-forgot a:hover {
    opacity: 0.75;
}

/* Submit Btn */
.auth-btn {
    width: 100%;
    padding: 15px;
    background: var(--grad45);
    border: none;
    border-radius: 12px;
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    letter-spacing: 0.2px;
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 194, 255, 0.4);
}

.auth-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    font-size: 0.78rem;
    margin-bottom: 20px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.07);
}

/* Social */
.auth-social {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.auth-social-btn {
    flex: 1;
    padding: 11px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 500;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.auth-social-btn:hover {
    border-color: var(--blue);
    color: var(--text);
}

/* Link */
.auth-alt {
    text-align: center;
    font-size: 0.82rem;
    color: var(--muted);
}

.auth-alt a {
    color: var(--blue);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
}

.auth-alt a:hover {
    text-decoration: underline;
}

/* Alert */
.auth-alert {
    background: rgba(255, 75, 75, 0.08);
    border: 1px solid rgba(255, 75, 75, 0.2);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.83rem;
    color: #FF7070;
    margin-bottom: 16px;
    display: none;
}

.auth-alert.show {
    display: block;
}

.auth-alert.success-alert {
    background: rgba(0, 208, 132, 0.08);
    border-color: rgba(0, 208, 132, 0.2);
    color: #00D084;
}

/* ─── Password strength ──────────────────────── */
.pw-strength {
    margin-top: 6px;
    display: none;
}

.pw-strength-bar {
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 4px;
}

.pw-strength-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s, background 0.4s;
}

.pw-strength-label {
    font-size: 0.7rem;
    color: var(--muted);
}

/* ─── Back link ──────────────────────────────── */
.auth-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 0.82rem;
    text-decoration: none;
    margin-bottom: 24px;
    transition: color 0.3s;
}

.auth-back:hover {
    color: var(--blue);
}

/* ─── Spinner ────────────────────────────────── */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 520px) {
    .auth-card {
        padding: 36px 24px;
    }

    .auth-wrapper {
        padding: 16px;
    }
}