/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;

    /* Neutral Colors */
    --bg-dark: #0f0f23;
    --bg-light: #1a1a2e;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    /* Input Colors */
    --input-bg: rgba(255, 255, 255, 0.08);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-focus: rgba(102, 126, 234, 0.4);

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glow: 0 0 20px rgba(102, 126, 234, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== CONTAINER & LAYOUT ===== */
.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

/* ===== ANIMATED BACKGROUND ===== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: var(--primary-gradient);
    opacity: 0.1;
    filter: blur(60px);
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 500px;
    height: 500px;
    top: -250px;
    left: -250px;
    animation-delay: 0s;
}

.circle-2 {
    width: 400px;
    height: 400px;
    bottom: -200px;
    right: -200px;
    animation-delay: 7s;
}

.circle-3 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(50px, -50px) scale(1.1);
    }

    66% {
        transform: translate(-30px, 30px) scale(0.9);
    }
}

/* ===== LOGIN CARD ===== */
.login-card {
    position: relative;
    z-index: 1;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 3rem;
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.6s ease;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== LOGO SECTION ===== */
.logo-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-circle {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glow);
    animation: pulse 3s infinite;
}

.logo-circle svg {
    width: 40px;
    height: 40px;
    color: white;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(102, 126, 234, 0.6);
    }
}

.logo-section h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ===== FORM STYLES ===== */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-left: 0.25rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-normal);
}

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

.input-wrapper input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--input-focus);
}

.input-icon {
    position: absolute;
    left: 1rem;
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-normal);
}

.input-wrapper input:focus+.input-icon,
.input-wrapper:has(input:focus) .input-icon {
    color: var(--primary-color);
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.toggle-password:hover {
    transform: scale(1.1);
}

.eye-icon {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: color var(--transition-normal);
}

.toggle-password:hover .eye-icon {
    color: var(--text-secondary);
}

/* ===== FORM FOOTER ===== */
.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: -0.5rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.remember-me span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.forgot-password::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.forgot-password:hover::after {
    width: 100%;
}

.forgot-password:hover {
    color: var(--accent-color);
}

/* ===== BUTTONS ===== */
.btn-login {
    margin-top: 0.5rem;
    padding: 1rem;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.btn-login svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-normal);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.5);
}

.btn-login:hover svg {
    transform: translateX(4px);
}

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

/* ===== REGISTER LINK ===== */
.register-link {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.register-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.register-link a:hover {
    color: var(--accent-color);
}

/* ===== MODAL STYLES ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    animation: fadeIn var(--transition-normal);
}

.modal.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2.5rem;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    animation: modalSlideUp 0.4s ease;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translate(-50%, -45%);
    }

    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close svg {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

/* ===== MODAL HEADER ===== */
.modal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.modal-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.modal-header h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== RESET FORM ===== */
.reset-form {
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-cancel,
.btn-submit {
    flex: 1;
    padding: 0.875rem;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-cancel {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn-submit {
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-submit svg {
    width: 18px;
    height: 18px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.5);
}

/* ===== SUCCESS MESSAGE ===== */
.success-message {
    text-align: center;
    padding: 2rem;
}

.success-message svg {
    width: 64px;
    height: 64px;
    color: #10b981;
    margin-bottom: 1rem;
    animation: checkmark 0.6s ease;
}

@keyframes checkmark {
    0% {
        transform: scale(0) rotate(-45deg);
        opacity: 0;
    }

    50% {
        transform: scale(1.2) rotate(5deg);
    }

    100% {
        transform: scale(1) rotate(0);
        opacity: 1;
    }
}

.success-message h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #10b981;
}

.success-message p {
    color: var(--text-secondary);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
    }

    .logo-section h1 {
        font-size: 1.5rem;
    }

    .modal-content {
        padding: 2rem 1.5rem;
        width: 95%;
    }

    .modal-actions {
        flex-direction: column;
    }
}

/* ===== LOADING STATE ===== */
.btn-loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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