/* ================================================================
   SenFinAI Suite — Frontend Styles
   Design: Dark fintech, #0B1120 bg, #00D4AA accent (cyan/teal)
   ================================================================ */

:root {
    --sf-bg:        #0B1120;
    --sf-bg-card:   #111827;
    --sf-bg-input:  #1E293B;
    --sf-border:    #334155;
    --sf-primary:   #00D4AA;
    --sf-primary-h: #00E4BA;
    --sf-accent:    #06B6D4;
    --sf-text:      #E2E8F0;
    --sf-text-dim:  #94A3B8;
    --sf-text-mute: #64748B;
    --sf-danger:    #F87171;
    --sf-success:   #34D399;
    --sf-warning:   #FBBF24;
    --sf-radius:    12px;
    --sf-radius-sm: 8px;
    --sf-shadow:    0 4px 32px rgba(0,0,0,0.3);
    --sf-font:      -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
}

/* ================================================================
   AUTH PAGE — Split layout (brand left, form right)
   ================================================================ */

.sf-auth-page {
    min-height: 100vh;
    background: var(--sf-bg);
    font-family: var(--sf-font);
    color: var(--sf-text);
    margin: 0;
    padding: 0;
}

.sf-auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

@media (max-width: 900px) {
    .sf-auth-container {
        grid-template-columns: 1fr;
    }
    .sf-auth-brand { display: none; }
}

/* ---- Brand Panel (Left) ---- */
.sf-auth-brand {
    position: relative;
    background: linear-gradient(160deg, #0B1120 0%, #0F172A 50%, #1a2744 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 48px;
    overflow: hidden;
}

.sf-brand-bg-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(0,212,170,0.06) 0%, transparent 50%),
                      radial-gradient(circle at 80% 20%, rgba(6,182,212,0.04) 0%, transparent 50%);
    pointer-events: none;
}

.sf-brand-content {
    position: relative;
    z-index: 1;
    max-width: 480px;
}

.sf-brand-logo-text {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}
.sf-logo-icon { font-size: 36px; }
.sf-brand-logo-text h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--sf-text);
    margin: 0;
}
.sf-brand-logo { max-width: 200px; margin-bottom: 40px; }

.sf-brand-headline {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 20px;
    color: var(--sf-text);
}
.sf-accent { color: var(--sf-primary); }

.sf-brand-desc {
    font-size: 16px;
    line-height: 1.6;
    color: var(--sf-text-dim);
    margin: 0 0 32px;
}

.sf-brand-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.sf-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(0,212,170,0.08);
    border: 1px solid rgba(0,212,170,0.15);
    border-radius: 20px;
    font-size: 13px;
    color: var(--sf-text-dim);
}

/* ---- Form Panel (Right) ---- */
.sf-auth-form-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 32px;
    background: var(--sf-bg-card);
    border-left: 1px solid var(--sf-border);
}

.sf-auth-form-inner {
    width: 100%;
    max-width: 400px;
}

.sf-back-link {
    display: inline-block;
    color: var(--sf-text-mute);
    font-size: 13px;
    text-decoration: none;
    margin-bottom: 32px;
    transition: color 0.2s;
}
.sf-back-link:hover { color: var(--sf-primary); }

.sf-form-title {
    font-size: 26px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--sf-text);
}
.sf-form-subtitle {
    font-size: 14px;
    color: var(--sf-text-dim);
    margin: 0 0 28px;
}

/* ---- Channel Toggle ---- */
.sf-channel-toggle {
    display: flex;
    background: var(--sf-bg);
    border-radius: var(--sf-radius-sm);
    padding: 4px;
    margin-bottom: 24px;
    border: 1px solid var(--sf-border);
}
.sf-channel-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border: none;
    background: transparent;
    color: var(--sf-text-mute);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
    font-family: var(--sf-font);
}
.sf-channel-btn.active {
    background: var(--sf-bg-input);
    color: var(--sf-primary);
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.sf-channel-btn svg { flex-shrink: 0; }

/* ---- Input Fields ---- */
.sf-field {
    margin-bottom: 20px;
}
.sf-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--sf-text-dim);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sf-input-wrap {
    display: flex;
    align-items: center;
    background: var(--sf-bg);
    border: 2px solid var(--sf-border);
    border-radius: var(--sf-radius-sm);
    overflow: hidden;
    transition: border-color 0.2s;
}
.sf-input-wrap:focus-within {
    border-color: var(--sf-primary);
    box-shadow: 0 0 0 3px rgba(0,212,170,0.1);
}

.sf-input-wrap input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 14px 16px;
    font-size: 15px;
    color: var(--sf-text);
    outline: none;
    font-family: var(--sf-font);
}
.sf-input-wrap input::placeholder { color: var(--sf-text-mute); }

/* Phone prefix */
.sf-input-phone .sf-phone-prefix {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 4px 0 14px;
    border-right: 1px solid var(--sf-border);
}
.sf-flag { font-size: 18px; }
.sf-phone-prefix select {
    background: transparent;
    border: none;
    color: var(--sf-text-dim);
    font-size: 14px;
    outline: none;
    cursor: pointer;
    font-family: var(--sf-font);
    padding: 8px 4px;
    -webkit-appearance: none;
}

/* ---- Buttons ---- */
.sf-btn {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: var(--sf-radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--sf-font);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.sf-btn-primary {
    background: var(--sf-primary);
    color: #0B1120;
}
.sf-btn-primary:hover {
    background: var(--sf-primary-h);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,212,170,0.25);
}
.sf-btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.sf-link-btn {
    background: none;
    border: none;
    color: var(--sf-text-mute);
    font-size: 13px;
    cursor: pointer;
    padding: 8px 12px;
    font-family: var(--sf-font);
    transition: color 0.2s;
}
.sf-link-btn:hover { color: var(--sf-primary); }
.sf-link-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.sf-link-accent {
    color: var(--sf-primary);
    text-decoration: none;
    font-weight: 600;
}
.sf-link-accent:hover { text-decoration: underline; }

/* ---- OTP ---- */
.sf-otp-header {
    text-align: center;
    margin-bottom: 28px;
}
.sf-otp-icon { font-size: 48px; margin-bottom: 12px; }
.sf-otp-header h3 { font-size: 22px; margin: 0 0 8px; color: var(--sf-text); }
.sf-otp-header p { font-size: 14px; color: var(--sf-text-dim); margin: 0; }
.sf-otp-header strong { color: var(--sf-primary); }

.sf-otp-inputs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}
.sf-otp-sep {
    color: var(--sf-text-mute);
    font-size: 18px;
    margin: 0 4px;
}
.sf-otp-digit {
    width: 48px;
    height: 56px;
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--sf-text);
    background: var(--sf-bg);
    border: 2px solid var(--sf-border);
    border-radius: var(--sf-radius-sm);
    outline: none;
    transition: all 0.2s;
    font-family: 'Courier New', monospace;
    caret-color: var(--sf-primary);
}
.sf-otp-digit:focus {
    border-color: var(--sf-primary);
    box-shadow: 0 0 0 3px rgba(0,212,170,0.15);
}
.sf-otp-digit.filled { border-color: var(--sf-primary); background: rgba(0,212,170,0.05); }

.sf-otp-timer {
    text-align: center;
    font-size: 13px;
    color: var(--sf-text-mute);
    margin-bottom: 24px;
}
.sf-otp-timer strong { color: var(--sf-warning); }

.sf-otp-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
}

/* ---- Misc ---- */
.sf-secure-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    font-size: 12px;
    color: var(--sf-text-mute);
}
.sf-secure-note svg { stroke: var(--sf-primary); flex-shrink: 0; }

.sf-trial-cta {
    text-align: center;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--sf-border);
}
.sf-trial-cta p { font-size: 13px; color: var(--sf-text-mute); margin: 0 0 6px; }

/* Messages */
#sf-messages:empty { display: none; }
.sf-msg {
    padding: 12px 16px;
    border-radius: var(--sf-radius-sm);
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sf-msg-error   { background: rgba(248,113,113,0.1); border: 1px solid rgba(248,113,113,0.2); color: var(--sf-danger); }
.sf-msg-success { background: rgba(52,211,153,0.1);  border: 1px solid rgba(52,211,153,0.2);  color: var(--sf-success); }
.sf-msg-info    { background: rgba(6,182,212,0.1);   border: 1px solid rgba(6,182,212,0.2);   color: var(--sf-accent); }

/* Spinner */
.sf-spinner {
    width: 20px; height: 20px;
    border: 2px solid rgba(0,212,170,0.2);
    border-top-color: var(--sf-primary);
    border-radius: 50%;
    animation: sf-spin 0.6s linear infinite;
    display: inline-block;
}
@keyframes sf-spin { to { transform: rotate(360deg); } }

/* Override WP styles */
.sf-auth-page * { box-sizing: border-box; }
.sf-auth-page a { color: var(--sf-primary); }