/* ═══════════════════════════════════════════════════════════════
   DueDiligence — Login Page
   ═══════════════════════════════════════════════════════════════ */

:root {
    --primary:       #2563eb;
    --primary-hover: #1d4ed8;
    --primary-ring:  rgba(37, 99, 235, 0.2);
    --bg-page:       #f1f5f9;
    --bg-card:       #ffffff;
    --text-main:     #1e293b;
    --text-secondary:#64748b;
    --text-muted:    #94a3b8;
    --border:        #e2e8f0;
    --error:         #dc2626;
    --error-bg:      #fef2f2;
    --error-border:  #fecaca;
    --radius:        12px;
    --radius-sm:     8px;
    --shadow:        0 20px 60px -12px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;

    /* Subtle gradient background */
    background:
        radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.04) 0%, transparent 50%),
        var(--bg-page);
}

/* Login spinner */
.login-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 8px;
}

.login-spinner[hidden] {
    display: none;
}

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.login-page {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

/* Top accent bar */
.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #60a5fa);
}

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

.login-logo {
    margin-bottom: 1.25rem;
    display: flex;
    justify-content: center;
}

.login-logo svg {
    filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.2));
}

.login-header h1 {
    font-size: 1.375rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    letter-spacing: -0.03em;
    color: var(--text-main);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    margin: 0;
    line-height: 1.5;
}

/* Form groups */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.375rem;
    letter-spacing: 0.01em;
}

.form-group input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-main);
    background: var(--bg-card);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:hover {
    border-color: #cbd5e1;
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-ring);
}

.form-help {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.375rem;
    line-height: 1.4;
}

/* Error message */
.error-message {
    background: var(--error-bg);
    color: var(--error);
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    margin-bottom: 1.25rem;
    border: 1px solid var(--error-border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    line-height: 1.4;
}

.error-message::before {
    content: '';
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    background: var(--error);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7 4a1 1 0 11-2 0 1 1 0 012 0zm-1-9a1 1 0 00-1 1v4a1 1 0 102 0V6a1 1 0 00-1-1z' clip-rule='evenodd'/%3E%3C/svg%3E") center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7 4a1 1 0 11-2 0 1 1 0 012 0zm-1-9a1 1 0 00-1 1v4a1 1 0 102 0V6a1 1 0 00-1-1z' clip-rule='evenodd'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* Login button */
.btn-login {
    width: 100%;
    padding: 0.6875rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.01em;
    box-shadow: 0 1px 3px rgba(37, 99, 235, 0.2);
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transform: translateY(-1px);
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

/* Back button */
.btn-back {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-family: inherit;
    margin-top: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.btn-back:hover {
    color: var(--text-main);
    background: rgba(0, 0, 0, 0.03);
}

/* Footer */
.login-footer {
    margin-top: 2rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.6875rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 2rem 1.5rem;
    }
}

/* ═══════════════════════════════════════════════════════════════
   Honeypot - Bot Protection
   Hidden fields that bots will fill out but humans won't see
   ═══════════════════════════════════════════════════════════════ */

.hp-field {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.hp-field label,
.hp-field input {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
}