@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&family=DM+Serif+Display&display=swap');

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

:root {
    --bg:        #0f1117;
    --surface:   #1a1d27;
    --surface2:  #212533;
    --border:    rgba(255,255,255,0.08);
    --border-focus: rgba(99,102,241,0.6);
    --accent:    #6366f1;
    --accent-h:  #4f46e5;
    --accent-glow: rgba(99,102,241,0.3);
    --text:      #f0f0f4;
    --text-muted:#8b8fa8;
    --error-bg:  rgba(239,68,68,0.1);
    --error:     #f87171;
    --radius:    12px;
    --radius-sm: 8px;
}

body.auth-body {
    font-family: 'DM Sans', sans-serif;
    background-color: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    /* Subtle grid background */
    background-image:
        linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* Glow blob behind card */
body.auth-body::before {
    content: '';
    position: fixed;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(99,102,241,0.12) 0%, transparent 70%);
    pointer-events: none;
}

/* ── Card ── */
.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    animation: cardIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Brand ── */
.auth-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 32px;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent), #818cf8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.brand-name {
    font-family: 'DM Serif Display', serif;
    font-size: 1.2rem;
    color: var(--text);
    letter-spacing: -0.01em;
}

/* ── Header ── */
.auth-header {
    margin-bottom: 28px;
}

.auth-header h1 {
    font-size: 1.65rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.03em;
    margin-bottom: 6px;
}

.auth-header p {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* ── Error ── */
.auth-error {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 0.875rem;
    margin-bottom: 20px;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%,100% { transform: translateX(0); }
    25%      { transform: translateX(-6px); }
    75%      { transform: translateX(6px); }
}

/* ── Form ── */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.field-group label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 13px;
    color: var(--text-muted);
    pointer-events: none;
    flex-shrink: 0;
}

.input-wrap input {
    width: 100%;
    padding: 11px 40px 11px 38px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.input-wrap input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.input-wrap input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Password toggle button */
.toggle-pw {
    position: absolute;
    right: 11px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.2s;
}

.toggle-pw:hover,
.toggle-pw.active {
    color: var(--accent);
}

/* ── Submit button ── */
.btn-primary {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--accent), #818cf8);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 4px;
    transition: opacity 0.2s, transform 0.1s, box-shadow 0.2s;
    box-shadow: 0 4px 16px var(--accent-glow);
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    opacity: 0.92;
    box-shadow: 0 6px 24px var(--accent-glow);
}

.btn-primary:active {
    transform: scale(0.98);
}

/* ── Switch link ── */
.auth-switch {
    text-align: center;
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.auth-switch a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.auth-switch a:hover {
    color: #818cf8;
    text-decoration: underline;
}

/* ── Number input arrow hide ── */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
}
input[type=number] { -moz-appearance: textfield; }