/* =============================================================================
   File        : assets/css/auth.css
   Purpose     : Styles for all authentication pages — login, register,
                 forgot password, reset password, verify email.
                 Light theme. Brand: #164836 green, #0531a9 blue.
   ============================================================================= */


:root {
    --color-primary:        #164836;
    --color-primary-dark:   #0f3226;
    --color-primary-light:  #e8f5ef;
    --color-primary-glow:   rgba(22, 72, 54, 0.10);
    --color-accent:         #0531a9;
    --color-accent-light:   #e8ecfb;

    --color-bg:             #f0f4f8;
    --color-surface:        #ffffff;
    --color-surface-2:      #f5f7fa;
    --color-border:         #d8dde6;
    --color-border-focus:   #164836;

    --color-text:           #111827;
    --color-text-muted:     #4b5563;
    --color-text-faint:     #9ca3af;

    --color-success:        #164836;
    --color-success-bg:     #e8f5ef;
    --color-error:          #dc2626;
    --color-error-bg:       #fef2f2;
    --color-warning:        #d97706;
    --color-warning-bg:     #fffbeb;
    --color-info:           #0531a9;
    --color-info-bg:        #e8ecfb;

    --radius-sm:            6px;
    --radius-md:            12px;
    --radius-lg:            20px;
    --shadow-card:          0 4px 24px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.05);

    --font-display:         'Syne', sans-serif;
    --font-body:            'DM Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 24px 16px;
    position: relative; overflow-x: hidden;
}

/* Subtle dot pattern background */
body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: radial-gradient(circle, #d8dde6 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.5;
    pointer-events: none; z-index: 0;
}

/* Green accent blob top */
body::after {
    content: '';
    position: fixed; top: -150px; left: -150px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(22,72,54,0.06) 0%, transparent 70%);
    pointer-events: none; z-index: 0;
}

/* Auth Container */
.auth-wrapper {
    position: relative; z-index: 1;
    width: 100%; max-width: 480px;
    animation: pageFadeIn 0.35s ease;
}
@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Logo area */
.auth-logo {
    text-align: center;
    margin-bottom: 28px;
}
.auth-logo a {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 12px; text-decoration: none;
}
.auth-logo-img {
    height: 48px; width: auto; object-fit: contain;
}
.auth-logo-name {
    font-family: var(--font-display);
    font-size: 22px; font-weight: 700; letter-spacing: -0.5px;
    color: var(--color-primary);
}

/* Card */
.auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 40px 36px;
    box-shadow: var(--shadow-card);
    position: relative; overflow: hidden;
}
.auth-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.auth-card-header { margin-bottom: 28px; }
.auth-card-header h1 {
    font-family: var(--font-display);
    font-size: 24px; font-weight: 700;
    color: var(--color-text); margin-bottom: 6px; letter-spacing: -0.5px;
}
.auth-card-header p { font-size: 14px; color: var(--color-text-muted); line-height: 1.5; }

/* Form Elements */
.form-group { margin-bottom: 18px; }
.form-label {
    display: block; font-size: 13px; font-weight: 500;
    color: var(--color-text-muted); margin-bottom: 7px; letter-spacing: 0.2px;
}
.form-label .required { color: var(--color-error); margin-left: 2px; }

.form-input {
    width: 100%;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 11px 14px;
    font-family: var(--font-body); font-size: 15px;
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none; -webkit-appearance: none;
}
.form-input::placeholder { color: var(--color-text-faint); }
.form-input:focus {
    border-color: var(--color-border-focus);
    background: #ffffff;
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.form-input.input-error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(220,38,38,0.10);
}

.input-wrapper { position: relative; }
.input-icon {
    position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
    color: var(--color-text-faint); pointer-events: none; line-height: 1;
}
.input-wrapper .form-input { padding-left: 40px; }

.btn-password-toggle {
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer;
    color: var(--color-text-muted); padding: 4px; line-height: 1;
    transition: color 0.2s;
}
.btn-password-toggle:hover { color: var(--color-primary); }

.field-error { font-size: 12px; color: var(--color-error); margin-top: 5px; display: flex; align-items: center; gap: 4px; }

/* Password strength */
.password-strength { margin-top: 8px; }
.strength-bar { height: 3px; background: var(--color-border); border-radius: 99px; overflow: hidden; margin-bottom: 5px; }
.strength-fill { height: 100%; border-radius: 99px; transition: width 0.3s, background 0.3s; width: 0%; }
.strength-fill.s1 { width: 25%; background: var(--color-error); }
.strength-fill.s2 { width: 50%; background: var(--color-warning); }
.strength-fill.s3 { width: 75%; background: var(--color-info); }
.strength-fill.s4 { width: 100%; background: var(--color-success); }
.strength-label { font-size: 11px; color: var(--color-text-muted); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font-family: var(--font-body); font-size: 15px; font-weight: 600;
    border-radius: var(--radius-sm); border: none; cursor: pointer;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
    text-decoration: none; letter-spacing: 0.1px; padding: 12px 20px; white-space: nowrap;
}
.btn:active { transform: scale(0.98); }

.btn-primary {
    background: var(--color-primary); color: #ffffff; width: 100%;
    padding: 13px; font-size: 15px;
    box-shadow: 0 3px 12px rgba(22,72,54,0.25);
}
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: 0 4px 18px rgba(22,72,54,0.35); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-ghost {
    background: transparent; color: var(--color-text-muted);
    border: 1px solid var(--color-border); width: 100%; padding: 11px;
}
.btn-ghost:hover { background: var(--color-surface-2); color: var(--color-text); }

.btn-spinner {
    display: none; width: 16px; height: 16px;
    border: 2px solid rgba(255,255,255,0.4); border-top-color: #ffffff;
    border-radius: 50%; animation: spin 0.7s linear infinite;
}
.btn.loading .btn-spinner { display: block; }
.btn.loading .btn-text { opacity: 0.7; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Alerts */
.alert {
    padding: 12px 16px; border-radius: var(--radius-sm);
    font-size: 14px; line-height: 1.5; margin-bottom: 20px;
    display: flex; align-items: flex-start; gap: 10px;
    border: 1px solid transparent; animation: alertSlideIn 0.25s ease;
}
@keyframes alertSlideIn { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.alert-icon { flex-shrink: 0; margin-top: 1px; }
.alert--success { background: var(--color-success-bg); border-color: rgba(22,72,54,0.2);  color: var(--color-success); }
.alert--error   { background: var(--color-error-bg);   border-color: rgba(220,38,38,0.2); color: var(--color-error); }
.alert--warning { background: var(--color-warning-bg); border-color: rgba(217,119,6,0.2);  color: var(--color-warning); }
.alert--info    { background: var(--color-info-bg);    border-color: rgba(5,49,169,0.2);   color: var(--color-info); }

/* Auth footer */
.auth-footer {
    text-align: center; margin-top: 24px;
    font-size: 13px; color: var(--color-text-muted);
}
.auth-footer a { color: var(--color-primary); text-decoration: none; font-weight: 500; transition: color 0.2s; }
.auth-footer a:hover { color: var(--color-primary-dark); text-decoration: underline; }

.auth-divider {
    display: flex; align-items: center; gap: 12px;
    margin: 20px 0; color: var(--color-text-faint); font-size: 12px;
}
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--color-border); }

/* State icons */
.state-icon {
    width: 64px; height: 64px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 28px;
}
.state-icon--success { background: var(--color-success-bg); border: 2px solid rgba(22,72,54,0.2); color: var(--color-success); }
.state-icon--error   { background: var(--color-error-bg);   border: 2px solid rgba(220,38,38,0.2); color: var(--color-error); }
.state-icon--pending { background: var(--color-warning-bg); border: 2px solid rgba(217,119,6,0.2);  color: var(--color-warning); }
.state-center { text-align: center; }

/* Terms checkbox */
.checkbox-group { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 20px; }
.checkbox-group input[type="checkbox"] { width: 17px; height: 17px; margin-top: 2px; flex-shrink: 0; accent-color: var(--color-primary); cursor: pointer; }
.checkbox-group label { font-size: 13px; color: var(--color-text-muted); line-height: 1.5; cursor: pointer; }
.checkbox-group label a { color: var(--color-primary); text-decoration: none; }

@media (max-width: 520px) {
    .auth-card { padding: 28px 22px 24px; }
    .auth-card-header h1 { font-size: 21px; }
}