/* Ultra Modern Login Page - 2024 Design */

/* CSS Reset & Base Styles */
*,
*::before,
*::after {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

/* Root Variables */
:root {
    /* Colors */
    --primary: #f97316;
    --primary-hover: #ea580c;
    --secondary: #10b981;
    --white: #ffffff;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-700: #334155;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-white: #ffffff;
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-focus: #f97316;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* Border Radius */
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* Base Body Styles */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: #ffffff;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}


/* Modern Telecom Background with Antenna Waves */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        /* Antenna Tower 1 - Top Left */
        radial-gradient(circle at 10% 15%, transparent 0%, transparent 2%, rgba(16, 185, 129, 0.1) 2.5%, transparent 3%),
        radial-gradient(circle at 10% 15%, transparent 0%, transparent 4%, rgba(16, 185, 129, 0.08) 4.5%, transparent 5%),
        radial-gradient(circle at 10% 15%, transparent 0%, transparent 6%, rgba(16, 185, 129, 0.06) 6.5%, transparent 7%),
        /* Antenna Tower 2 - Top Right */
        radial-gradient(circle at 90% 20%, transparent 0%, transparent 2%, rgba(249, 115, 22, 0.1) 2.5%, transparent 3%),
        radial-gradient(circle at 90% 20%, transparent 0%, transparent 4%, rgba(249, 115, 22, 0.08) 4.5%, transparent 5%),
        radial-gradient(circle at 90% 20%, transparent 0%, transparent 6%, rgba(249, 115, 22, 0.06) 6.5%, transparent 7%),
        /* Antenna Tower 3 - Bottom Left */
        radial-gradient(circle at 15% 85%, transparent 0%, transparent 2%, rgba(107, 114, 128, 0.1) 2.5%, transparent 3%),
        radial-gradient(circle at 15% 85%, transparent 0%, transparent 4%, rgba(107, 114, 128, 0.08) 4.5%, transparent 5%),
        /* Signal Waves */
        conic-gradient(from 0deg at 10% 15%, transparent 0deg, rgba(16, 185, 129, 0.1) 30deg, transparent 60deg),
        conic-gradient(from 120deg at 90% 20%, transparent 0deg, rgba(249, 115, 22, 0.1) 30deg, transparent 60deg),
        conic-gradient(from 240deg at 15% 85%, transparent 0deg, rgba(107, 114, 128, 0.1) 30deg, transparent 60deg);
    z-index: -1;
    animation: antennaWaves 4s ease-in-out infinite;
}

@keyframes antennaWaves {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1) rotate(0deg);
    }
    25% {
        opacity: 0.7;
        transform: scale(1.05) rotate(1deg);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1) rotate(0deg);
    }
    75% {
        opacity: 0.8;
        transform: scale(1.05) rotate(-1deg);
    }
}

/* Main Container */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    position: relative;
}


/* Login Wrapper */
.login-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1400px;
    width: 100%;
    min-height: 700px;
    position: relative;
}

/* Telecom Data Flow Line */
.login-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(16, 185, 129, 0.3) 15%,
        rgba(16, 185, 129, 0.6) 25%,
        rgba(249, 115, 22, 0.6) 50%,
        rgba(16, 185, 129, 0.6) 75%,
        rgba(16, 185, 129, 0.3) 85%,
        transparent 100%);
    transform: translateY(-50%);
    z-index: 1;
    animation: dataFlow 3s ease-in-out infinite;
}

/* Data Packet Dots */
.login-wrapper::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 20%;
    width: 6px;
    height: 6px;
    background: rgba(16, 185, 129, 0.8);
    border-radius: 50%;
    transform: translateY(-50%);
    z-index: 2;
    animation: packetFlow 2s ease-in-out infinite;
}

@keyframes dataFlow {
    0%, 100% {
        opacity: 0.4;
        transform: translateY(-50%) scaleX(0.7);
    }
    50% {
        opacity: 0.8;
        transform: translateY(-50%) scaleX(1);
    }
}

@keyframes packetFlow {
    0% {
        left: 20%;
        opacity: 0.6;
        transform: translateY(-50%) scale(0.8);
    }
    50% {
        left: 50%;
        opacity: 1;
        transform: translateY(-50%) scale(1.2);
    }
    100% {
        left: 80%;
        opacity: 0.6;
        transform: translateY(-50%) scale(0.8);
    }
}


/* Image Section */
.login-image-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-16);
}

/* Image Container */
.image-container {
    width: 100%;
    max-width: 500px;
}

.dashboard-image {
    width: 100%;
    height: auto;
    object-fit: contain;
}

/* Form Section */
.login-form-section {
    padding: var(--space-20) var(--space-16);
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-container {
    width: 100%;
    max-width: 420px;
    z-index: 1;
}

/* Logo */
.logo-container {
    text-align: center;
    margin-bottom: var(--space-12);
}

.logo-image {
    height: 80px;
    width: auto;
    object-fit: contain;
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    margin-bottom: var(--space-12);
}

.dashboard-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.dashboard-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
}

/* Form Styles */
.login-form {
    width: 100%;
}

.input-group {
    margin-bottom: var(--space-8);
}

.input-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    letter-spacing: 0.025em;
}

.form-input {
    width: 100%;
    padding: 18px 24px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: var(--white);
    color: var(--text-primary);
    transition: all var(--transition-normal);
    outline: none;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.form-input:focus {
    border-color: var(--border-focus);
    box-shadow:
        0 0 0 4px rgba(249, 115, 22, 0.1),
        var(--shadow-md);
    transform: translateY(-2px);
    background: linear-gradient(90deg,
        #ffffff 0%,
        rgba(16, 185, 129, 0.02) 50%,
        #ffffff 100%);
    animation: dataFlow 2s ease-in-out;
}

@keyframes dataFlow {
    0% {
        background: #ffffff;
    }
    50% {
        background: linear-gradient(90deg,
            #ffffff 0%,
            rgba(16, 185, 129, 0.05) 50%,
            #ffffff 100%);
    }
    100% {
        background: #ffffff;
    }
}

.form-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.form-input:hover:not(:focus) {
    border-color: var(--border-medium);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Login Button */
.login-button {
    width: 100%;
    padding: 20px 32px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: var(--text-white);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-weight: 700;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: var(--space-8);
    box-shadow:
        0 10px 25px rgba(249, 115, 22, 0.4),
        var(--shadow-lg);
    letter-spacing: 0.025em;
}

.login-button:hover:not(:disabled) {
    transform: translateY(-4px);
    box-shadow:
        0 20px 40px rgba(249, 115, 22, 0.5),
        var(--shadow-2xl);
    background: linear-gradient(135deg, var(--primary-hover) 0%, #c2410c 100%);
    animation: signalPulse 1.5s ease-in-out infinite;
}

@keyframes signalPulse {
    0%, 100% {
        box-shadow:
            0 20px 40px rgba(249, 115, 22, 0.5),
            var(--shadow-2xl);
    }
    50% {
        box-shadow:
            0 20px 40px rgba(249, 115, 22, 0.7),
            0 0 20px rgba(16, 185, 129, 0.3),
            var(--shadow-2xl);
    }
}

.login-button:active {
    transform: translateY(-2px);
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.button-text {
    display: inline-block;
    transition: opacity var(--transition-fast);
    position: relative;
    z-index: 1;
}

.button-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

/* Spinner Animation */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid var(--text-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Alert Messages */
.messages-container {
    margin-top: var(--space-6);
}

.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: var(--space-4);
    border: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    box-shadow: var(--shadow-sm);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    color: #dc2626;
    border-left: 4px solid #dc2626;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.15);
}

.alert-success {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    color: #16a34a;
    border-left: 4px solid #16a34a;
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.15);
}

.alert-info {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: #2563eb;
    border-left: 4px solid #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.alert-warning {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    color: #d97706;
    border-left: 4px solid #d97706;
    box-shadow: 0 4px 12px rgba(217, 119, 6, 0.15);
}

.alert-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
}

.alert-icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.alert-text {
    flex: 1;
    line-height: 1.5;
}



/* Responsive Design */
@media (max-width: 768px) {
    .login-wrapper {
        grid-template-columns: 1fr;
        max-width: 500px;
        min-height: auto;
    }

    .login-image-section {
        padding: var(--space-12);
        min-height: 300px;
    }

    .login-form-section {
        padding: var(--space-12) var(--space-8);
    }

    .dashboard-title {
        font-size: var(--font-size-3xl);
    }

    .dashboard-subtitle {
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: var(--space-2);
    }

    .login-form-section {
        padding: var(--space-8) var(--space-6);
    }

    .form-container {
        max-width: 100%;
    }

    .dashboard-title {
        font-size: var(--font-size-2xl);
    }
}

/* Focus Styles for Keyboard Navigation */
.form-input:focus-visible,
.login-button:focus-visible {
    outline: 3px solid var(--border-focus);
    outline-offset: 2px;
}