/* =====================================================
   KURD STORES - AUTHENTICATION PAGES DESIGN SYSTEM
   Modern, Clean, Accessible & Production-Ready
   Created: December 2025
   ===================================================== */

/* =====================================================
   CSS CUSTOM PROPERTIES (Auth-Specific Tokens)
   ===================================================== */
.auth-page {
    --auth-card-max-width: 460px;
    --auth-card-padding: var(--space-8);
    --auth-card-radius: var(--radius-2xl);
    --auth-input-height: 52px;
    --auth-button-height: 52px;
    --auth-gap: var(--space-5);
    --auth-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =====================================================
   AUTH PAGE BASE
   ===================================================== */
.auth-page {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding-top: var(--header-height);
    display: flex;
    flex-direction: column;
}

/* =====================================================
   AUTH WRAPPER & LAYOUT
   ===================================================== */
.auth-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    position: relative;
    overflow: hidden;
}

/* Animated Background Decoration */
.auth-bg-decoration {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.6;
    animation: authFloat 25s ease-in-out infinite;
    will-change: transform;
}

.circle-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-100);
    top: -15%;
    left: -10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background: var(--primary-200);
    bottom: -10%;
    right: -10%;
    animation-delay: -8s;
}

.circle-3 {
    width: 300px;
    height: 300px;
    background: var(--secondary-light);
    top: 50%;
    left: 60%;
    opacity: 0.3;
    animation-delay: -15s;
}

@keyframes authFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 15px) scale(1.02); }
}

/* =====================================================
   AUTH CONTAINER
   ===================================================== */
.auth-container {
    width: 100%;
    max-width: var(--auth-card-max-width);
    position: relative;
    z-index: 1;
}

/* =====================================================
   AUTH CARD (Main Card Component)
   ===================================================== */
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--auth-card-radius);
    padding: var(--auth-card-padding);
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.1) inset;
    animation: authCardEnter 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

/* Accent top border */
.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--auth-card-radius) var(--auth-card-radius) 0 0;
}

@keyframes authCardEnter {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* =====================================================
   AUTH HEADER (Logo, Title, Subtitle)
   ===================================================== */
.auth-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.logo-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
}

.logo-container .logo {
    height: 56px;
    width: auto;
    object-fit: contain;
    transition: transform var(--auth-transition);
}

.logo-container:hover .logo {
    transform: scale(1.05);
}

.auth-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin: 0 0 var(--space-2) 0;
    letter-spacing: -0.025em;
    line-height: var(--leading-tight);
}

.auth-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--leading-relaxed);
}

/* =====================================================
   SIGNUP PROGRESS INDICATOR
   ===================================================== */
.signup-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
    padding: var(--space-4) var(--space-5);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-primary);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    opacity: 0.5;
    transition: all var(--auth-transition);
}

.progress-step.active {
    opacity: 1;
}

.progress-step.completed {
    opacity: 1;
}

.step-circle {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-secondary);
    color: var(--text-tertiary);
    font-size: var(--text-base);
    transition: all var(--auth-transition);
}

.progress-step.active .step-circle {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 16px rgba(5, 214, 193, 0.35);
    transform: scale(1.05);
}

.progress-step.completed .step-circle {
    background: var(--success);
    border-color: transparent;
    color: white;
}

.step-label {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.progress-step.active .step-label {
    color: var(--text-primary);
    font-weight: var(--font-semibold);
}

.progress-line {
    width: 60px;
    height: 3px;
    background: var(--border-secondary);
    border-radius: var(--radius-full);
    position: relative;
    overflow: hidden;
}

.progress-line::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: var(--progress, 0%);
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* =====================================================
   MESSAGE ALERTS (Error, Success, Warning)
   ===================================================== */
.message-container {
    margin-bottom: var(--space-5);
    animation: messageSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    position: relative;
}

.error-message {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, rgba(239, 68, 68, 0.04) 100%);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.success-message {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(16, 185, 129, 0.04) 100%);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.warning-message {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(245, 158, 11, 0.04) 100%);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.message-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
}

.error-message .message-icon {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.success-message .message-icon {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.warning-message .message-icon {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.message-content {
    flex: 1;
    min-width: 0;
}

.message-content strong {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.error-message .message-content strong { color: var(--error-dark); }
.success-message .message-content strong { color: var(--success-dark); }
.warning-message .message-content strong { color: var(--warning-dark); }

.message-content p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--leading-relaxed);
}

.message-content .message-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--primary);
    transition: color var(--auth-transition);
}

.message-content .message-link:hover {
    color: var(--primary-dark);
}

.message-close {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--auth-transition);
}

.message-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

/* =====================================================
   AUTH FORM
   ===================================================== */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--auth-gap);
}

/* Form Sections (Multi-step) */
.form-section {
    display: none;
    animation: sectionFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.form-section.active {
    display: block;
}

@keyframes sectionFadeIn {
    from {
        opacity: 0;
        transform: translateX(16px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.section-header {
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-primary);
}

.section-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--space-1) 0;
}

.section-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
}

/* Form Grid */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

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

/* =====================================================
   FORM GROUP & LABELS
   ===================================================== */
.form-group {
    position: relative;
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.label-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 12px;
}

.label-badge {
    font-size: 10px;
    font-weight: var(--font-medium);
    color: var(--text-muted);
    background: var(--bg-elevated);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-left: auto;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.label-optional {
    font-size: var(--text-xs);
    font-weight: var(--font-normal);
    color: var(--text-muted);
    margin-left: auto;
}

/* =====================================================
   INPUT WRAPPER & CONTROLS
   ===================================================== */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix,
.input-suffix {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 100%;
    color: var(--text-tertiary);
    pointer-events: none;
    z-index: 1;
    transition: color var(--auth-transition);
}

.input-prefix {
    left: 0;
}

.input-suffix {
    right: 0;
    pointer-events: auto;
    cursor: pointer;
    background: transparent;
    border: none;
    padding: 0;
}

.input-suffix:hover {
    color: var(--primary);
}

.input-suffix:focus {
    outline: none;
    color: var(--primary);
}

/* Form Control (Input) */
.form-control {
    width: 100%;
    height: var(--auth-input-height);
    padding: 0 var(--space-4);
    background: var(--bg-input);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-family: inherit;
    transition: all var(--auth-transition);
}

.form-control.with-prefix {
    padding-left: 48px;
}

.form-control.with-suffix {
    padding-right: 48px;
}

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

.form-control:hover {
    border-color: var(--border-hover);
    background: var(--bg-card);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 4px rgba(5, 214, 193, 0.12);
}

/* Focus state for prefix icon */
.form-control:focus ~ .input-prefix,
.input-wrapper:focus-within .input-prefix {
    color: var(--primary);
}

/* Validation States */
.form-control.valid {
    border-color: var(--success);
}

.form-control.valid:focus {
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.12);
}

.form-control.invalid {
    border-color: var(--error);
}

.form-control.invalid:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12);
}

/* Disabled State */
.form-control:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--bg-elevated);
}

/* =====================================================
   INPUT HELPER & STATUS BADGES
   ===================================================== */
.input-helper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-2);
    min-height: 20px;
}

.helper-text {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.status-badge {
    font-size: 11px;
    font-weight: var(--font-semibold);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    transition: all var(--auth-transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.status-badge:empty {
    display: none;
}

.status-badge.available {
    background: rgba(16, 185, 129, 0.12);
    color: var(--success);
}

.status-badge.unavailable {
    background: rgba(239, 68, 68, 0.12);
    color: var(--error);
}

.status-badge.loading {
    background: rgba(245, 158, 11, 0.12);
    color: var(--warning);
}

.status-badge.invalid {
    background: rgba(239, 68, 68, 0.12);
    color: var(--error);
}

/* Input Action Button */
.input-action {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
}

.btn-icon {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--auth-transition);
}

.btn-icon:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: rotate(180deg);
}

.btn-icon:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(5, 214, 193, 0.2);
}

/* =====================================================
   PASSWORD STRENGTH INDICATOR
   ===================================================== */
.password-strength {
    margin-top: var(--space-3);
}

.strength-bars {
    display: flex;
    gap: 6px;
    margin-bottom: var(--space-2);
}

.strength-bar {
    flex: 1;
    height: 4px;
    background: var(--border-secondary);
    border-radius: var(--radius-full);
    transition: all var(--auth-transition);
}

.password-strength.weak .strength-bar:nth-child(1) {
    background: var(--error);
}

.password-strength.medium .strength-bar:nth-child(1),
.password-strength.medium .strength-bar:nth-child(2) {
    background: var(--warning);
}

.password-strength.strong .strength-bar {
    background: var(--success);
}

.strength-text {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.strength-label {
    font-weight: var(--font-semibold);
    transition: color var(--auth-transition);
}

.password-strength.weak .strength-label { color: var(--error); }
.password-strength.medium .strength-label { color: var(--warning); }
.password-strength.strong .strength-label { color: var(--success); }

/* Password Requirements */
.password-requirements {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
    margin-top: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
}

@media (max-width: 400px) {
    .password-requirements {
        grid-template-columns: 1fr;
    }
}

.requirement {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    transition: color var(--auth-transition);
}

.requirement i {
    font-size: 8px;
    width: 16px;
    text-align: center;
    transition: all var(--auth-transition);
}

.requirement.met {
    color: var(--success);
}

.requirement.met i {
    transform: scale(1.3);
}

/* Password Match Indicator */
.password-match {
    margin-top: var(--space-2);
    min-height: 18px;
}

.match-text {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.password-match.match .match-text {
    color: var(--success);
}

.password-match.match .match-text::before {
    content: '✓';
    font-weight: bold;
}

.password-match.no-match .match-text {
    color: var(--error);
}

.password-match.no-match .match-text::before {
    content: '✗';
    font-weight: bold;
}

/* =====================================================
   CHECKBOX STYLING
   ===================================================== */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    transition: all var(--auth-transition);
    margin-top: 1px;
}

.checkbox-custom i {
    font-size: 10px;
    color: transparent;
    transition: all var(--auth-transition);
    transform: scale(0);
}

.checkbox-label:hover .checkbox-custom {
    border-color: var(--primary);
}

.checkbox-label input:focus + .checkbox-custom {
    box-shadow: 0 0 0 3px rgba(5, 214, 193, 0.2);
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input:checked + .checkbox-custom i {
    color: white;
    transform: scale(1);
}

.checkbox-text {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.checkbox-text a {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-medium);
    transition: color var(--auth-transition);
}

.checkbox-text a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* =====================================================
   FORM OPTIONS (Remember Me & Forgot Password)
   ===================================================== */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.forgot-link {
    font-size: var(--text-sm);
    color: var(--primary);
    font-weight: var(--font-medium);
    transition: all var(--auth-transition);
}

.forgot-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* =====================================================
   FORM ACTIONS (Multi-step Navigation)
   ===================================================== */
.form-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.btn-back,
.btn-next,
.btn-submit {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: var(--auth-button-height);
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--auth-transition);
    border: none;
}

.btn-back {
    display: none;
    background: var(--bg-secondary);
    border: 2px solid var(--border-secondary);
    color: var(--text-secondary);
}

.btn-back:hover {
    border-color: var(--text-tertiary);
    color: var(--text-primary);
    background: var(--bg-elevated);
}

.btn-back:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

/* Show back button on step 2 */
.form-section[data-section="2"].active ~ .form-actions .btn-back {
    display: flex;
}

.form-section[data-section="2"].active ~ .form-actions .btn-next {
    display: none;
}

.form-section[data-section="1"].active ~ .form-actions .btn-submit {
    display: none;
}

.btn-next,
.btn-submit {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(5, 214, 193, 0.35);
}

.btn-next:hover,
.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 214, 193, 0.4);
}

.btn-next:focus,
.btn-submit:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(5, 214, 193, 0.3), 0 4px 14px rgba(5, 214, 193, 0.35);
}

.btn-next:active,
.btn-submit:active {
    transform: translateY(0);
}

.btn-next:disabled,
.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* =====================================================
   AUTH BUTTON (Primary Submit Button)
   ===================================================== */
.auth-btn {
    width: 100%;
    height: var(--auth-button-height);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--auth-transition);
    box-shadow: 0 4px 14px rgba(5, 214, 193, 0.35);
    position: relative;
    overflow: hidden;
}

.auth-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--auth-transition);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 214, 193, 0.4);
}

.auth-btn:hover::before {
    opacity: 1;
}

.auth-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(5, 214, 193, 0.3), 0 4px 14px rgba(5, 214, 193, 0.35);
}

.auth-btn:active {
    transform: translateY(0);
}

.auth-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Loading state */
.auth-btn.loading {
    pointer-events: none;
}

/* =====================================================
   AUTH FOOTER (Links & Social Login)
   ===================================================== */
.auth-footer {
    margin-top: var(--space-8);
    text-align: center;
}

.footer-text {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--space-4) 0;
}

.footer-link {
    color: var(--primary);
    font-weight: var(--font-semibold);
    transition: color var(--auth-transition);
}

.footer-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Social Divider */
.social-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-5) 0;
}

.social-divider::before,
.social-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-primary);
}

.social-divider span {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: var(--font-medium);
}

/* Social Buttons */
.social-buttons {
    display: flex;
    gap: var(--space-3);
}

.btn-social {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 48px;
    background: var(--bg-card);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--auth-transition);
}

.btn-social:hover:not(:disabled) {
    border-color: var(--border-hover);
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-social:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.btn-social:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-social svg {
    flex-shrink: 0;
}

.btn-social.google:hover:not(:disabled) {
    border-color: #4285F4;
}

.btn-social.facebook:hover:not(:disabled) {
    border-color: #1877F2;
}

/* =====================================================
   SUCCESS STATE (Password Reset Complete)
   ===================================================== */
.success-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.success-actions .auth-btn {
    text-decoration: none;
}

/* =====================================================
   VALIDATION ERROR MESSAGE
   ===================================================== */
.validation-error {
    display: block;
    font-size: 11px;
    color: var(--error);
    margin-top: var(--space-2);
    animation: errorShake 0.4s ease;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

/* =====================================================
   LOADING SPINNER
   ===================================================== */
@keyframes authSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.fa-spin {
    animation: authSpin 1s linear infinite;
}

/* =====================================================
   GOOGLE NOTIFICATION (Toast)
   ===================================================== */
.google-notification {
    position: fixed;
    top: calc(var(--header-height) + var(--space-4));
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    z-index: 10000;
    animation: toastSlideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    box-shadow: var(--shadow-xl);
}

@keyframes toastSlideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* =====================================================
   RESPONSIVE ADJUSTMENTS
   ===================================================== */
@media (max-width: 768px) {
    .auth-page {
        --auth-card-padding: var(--space-6);
    }
    
    .auth-wrapper {
        padding: var(--space-4);
        align-items: flex-start;
        padding-top: var(--space-6);
    }
    
    .auth-title {
        font-size: var(--text-xl);
    }
    
    .logo-container .logo {
        height: 48px;
    }
    
    .signup-progress {
        padding: var(--space-3);
        gap: var(--space-2);
    }
    
    .step-circle {
        width: 38px;
        height: 38px;
        font-size: var(--text-sm);
    }
    
    .progress-line {
        width: 40px;
    }
    
    .social-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .auth-page {
        --auth-card-padding: var(--space-5);
        --auth-input-height: 48px;
        --auth-button-height: 48px;
    }
    
    .auth-header {
        margin-bottom: var(--space-6);
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .btn-back,
    .btn-next,
    .btn-submit {
        flex: none;
        width: 100%;
    }
}

/* =====================================================
   DARK MODE SUPPORT
   ===================================================== */
@media (prefers-color-scheme: dark) {
    .auth-page .auth-wrapper {
        /* Dark mode inherits from CSS variables - ensure proper contrast */
        --auth-card-bg: rgba(30, 30, 40, 0.95);
    }
    
    .decoration-circle {
        opacity: 0.4;
    }
    
    .auth-card {
        box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.05) inset;
    }
}

/* =====================================================
   REDUCED MOTION SUPPORT
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
    .auth-card,
    .message-container,
    .form-section,
    .decoration-circle {
        animation: none;
    }
    
    .auth-btn:hover,
    .btn-next:hover,
    .btn-submit:hover,
    .btn-social:hover {
        transform: none;
    }
}

/* =====================================================
   HIGH CONTRAST MODE
   ===================================================== */
@media (prefers-contrast: high) {
    .form-control {
        border-width: 3px;
    }
    
    .auth-btn,
    .btn-next,
    .btn-submit {
        border: 2px solid white;
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .auth-bg-decoration,
    .social-buttons,
    .social-divider {
        display: none;
    }
    
    .auth-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}