/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --danger-gradient: linear-gradient(135deg, #ee0979 0%, #ff6a00 100%);
    
    /* Dark Theme (default) */
    --bg-primary: #0a0a0f;
    --bg-secondary: #05050a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-hover: rgba(255, 255, 255, 0.08);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --shadow-primary: 0 10px 50px rgba(0, 212, 255, 0.3);
    --shadow-secondary: 0 5px 30px rgba(0, 0, 0, 0.5);
    
    --transition-speed: 0.3s;
}

body.light-theme {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-hover: rgba(0, 0, 0, 0.05);
    --border-color: rgba(0, 0, 0, 0.1);
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #8a8a8a;
    --shadow-primary: 0 10px 50px rgba(0, 212, 255, 0.2);
    --shadow-secondary: 0 5px 30px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    cursor: none;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

* {
    cursor: none;
}

/* Sfondo Animato */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

body.light-theme .animated-background {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

body.light-theme .gradient-orb {
    opacity: 0.2;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #00d4ff 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #7b2ff7 0%, transparent 70%);
    bottom: -15%;
    right: -15%;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #f5576c 0%, transparent 70%);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(100px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 100px) scale(0.9);
    }
}

/* Canvas Particles */
#particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Glassmorphism */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    box-shadow: var(--shadow-secondary);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    z-index: 1000;
    box-shadow: var(--shadow-secondary);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-primary);
}

.theme-toggle .sun-icon {
    display: none;
    color: var(--text-primary);
}

.theme-toggle .moon-icon {
    display: block;
    color: var(--text-primary);
}

body.light-theme .theme-toggle .sun-icon {
    display: block;
}

body.light-theme .theme-toggle .moon-icon {
    display: none;
}

/* Back Home Button */
.back-home {
    position: fixed;
    top: 30px;
    left: 30px;
    padding: 12px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-speed);
    z-index: 1000;
    box-shadow: var(--shadow-secondary);
}

.back-home:hover {
    transform: translateX(-5px);
    box-shadow: var(--shadow-primary);
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

/* Portal Container */
.portal-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 40px;
    max-width: 550px;
    margin: 0 auto;
}

/* Portal Header */
.portal-header {
    text-align: center;
    margin-bottom: 40px;
}

.portal-logo {
    height: 100px;
    width: auto;
    margin-bottom: 20px;
    filter: drop-shadow(0 10px 30px rgba(0, 212, 255, 0.3));
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.portal-title {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.portal-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Auth Container */
.auth-container {
    width: 100%;
    padding: 40px;
    animation: slideUp 0.6s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tab Switcher */
.tab-switcher {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    padding: 6px;
    background: var(--bg-hover);
    border-radius: 50px;
    position: relative;
}

.tab-btn {
    flex: 1;
    padding: 14px 24px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-speed);
    z-index: 2;
    cursor: pointer;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: white;
}

.tab-indicator {
    position: absolute;
    width: calc(50% - 11px);
    height: calc(100% - 12px);
    background: var(--primary-gradient);
    border-radius: 50px;
    top: 6px;
    left: 6px;
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
}

.tab-btn.active:last-child ~ .tab-indicator {
    transform: translateX(calc(100% + 10px));
}

/* Auth Form */
.auth-form {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Form Group */
.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-group label svg {
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-hover);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all var(--transition-speed);
    position: relative;
}

.form-group input:focus {
    outline: none;
    border-color: transparent;
    background: var(--bg-card);
}

.form-group input:focus ~ .input-focus-border {
    transform: scaleX(1);
}

.input-focus-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 0 0 12px 12px;
}

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

/* Password Input */
.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    padding-right: 50px;
}

.toggle-password {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
    border-radius: 6px;
    transition: all var(--transition-speed);
}

.toggle-password:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.toggle-password .eye-closed {
    display: none;
}

.toggle-password.active .eye-open {
    display: none;
}

.toggle-password.active .eye-closed {
    display: block;
}

/* Password Strength */
.password-strength {
    margin-top: 10px;
}

.strength-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-hover);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 6px;
}

.strength-fill {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 10px;
}

.strength-text {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Strength Levels */
.password-strength.weak .strength-fill {
    width: 33%;
    background: #ef4444;
}

.password-strength.weak .strength-text {
    color: #ef4444;
}

.password-strength.medium .strength-fill {
    width: 66%;
    background: #f59e0b;
}

.password-strength.medium .strength-text {
    color: #f59e0b;
}

.password-strength.strong .strength-fill {
    width: 100%;
    background: #10b981;
}

.password-strength.strong .strength-text {
    color: #10b981;
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 10px;
}

/* Custom Checkbox */
.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    position: relative;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 20px;
    height: 20px;
    background: var(--bg-hover);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    margin-right: 10px;
    position: relative;
    transition: all var(--transition-speed);
}

.checkbox-container:hover .checkmark {
    border-color: #00d4ff;
}

.checkbox-container input:checked ~ .checkmark {
    background: var(--primary-gradient);
    border-color: transparent;
}

.checkmark::after {
    content: '';
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark::after {
    display: block;
}

.checkbox-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-label a {
    color: #00d4ff;
    text-decoration: none;
    transition: color var(--transition-speed);
}

.checkbox-label a:hover {
    color: #7b2ff7;
    text-decoration: underline;
}

.forgot-password {
    font-size: 0.9rem;
    color: #00d4ff;
    text-decoration: none;
    transition: color var(--transition-speed);
}

.forgot-password:hover {
    color: #7b2ff7;
    text-decoration: underline;
}

/* Submit Button */
.btn-submit {
    width: 100%;
    padding: 16px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 700;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

.btn-submit:active {
    transform: translateY(-1px);
}

.btn-submit.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-submit.loading .btn-text,
.btn-submit.loading .btn-icon {
    opacity: 0;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: absolute;
}

.btn-submit.loading .btn-loader {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Form Divider */
.form-divider {
    display: flex;
    align-items: center;
    margin: 30px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.form-divider span {
    padding: 0 15px;
}

/* Social Login */
.social-login {
    display: flex;
    gap: 15px;
}

.social-btn {
    flex: 1;
    padding: 14px;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.social-btn:hover {
    background: var(--bg-card);
    border-color: var(--text-muted);
    transform: translateY(-2px);
    box-shadow: var(--shadow-secondary);
}

/* Security Info */
.security-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.security-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    box-shadow: var(--shadow-secondary);
}

.security-badge svg {
    color: #10b981;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: -100px;
    right: 30px;
    min-width: 350px;
    padding: 20px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: var(--shadow-primary);
    z-index: 10000;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
    top: 30px;
}

.toast-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    background: var(--success-gradient);
}

.toast.error .toast-icon {
    background: var(--danger-gradient);
}

.toast.success .toast-icon::after {
    content: '✓';
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

.toast.error .toast-icon::after {
    content: '✕';
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.toast-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 6px;
    transition: all var(--transition-speed);
}

.toast-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* AOS Animations */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-down"] {
    transform: translateY(-30px);
}

[data-aos="fade-down"].aos-animate {
    transform: translateY(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

/* Custom Cursor */
.custom-cursor {
    width: 10px;
    height: 10px;
    background: #00d4ff;
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: transform 0.2s ease, background 0.2s ease;
    mix-blend-mode: difference;
}

.cursor-follower {
    width: 40px;
    height: 40px;
    border: 2px solid #00d4ff;
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.2s ease;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    .portal-container {
        padding: 80px 15px 30px;
    }
    
    .auth-container {
        padding: 30px 20px;
    }
    
    .portal-title {
        font-size: 2rem;
    }
    
    .portal-subtitle {
        font-size: 1rem;
    }
    
    .portal-logo {
        height: 80px;
    }
    
    .theme-toggle,
    .back-home {
        top: 15px;
    }
    
    .back-home {
        left: 15px;
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .theme-toggle {
        right: 15px;
        width: 45px;
        height: 45px;
    }
    
    .toast {
        min-width: calc(100% - 30px);
        right: 15px;
    }
    
    .toast.show {
        top: 80px;
    }
    
    .security-info {
        flex-direction: column;
        align-items: stretch;
    }
    
    .security-badge {
        justify-content: center;
    }
    
    .custom-cursor,
    .cursor-follower {
        display: none;
    }
}

@media (max-width: 480px) {
    .social-login {
        flex-direction: column;
    }
    
    .tab-btn {
        font-size: 0.9rem;
        padding: 12px 18px;
    }
}