@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,200;0,300;0,400;0,500;0,600;0,700;1,100;1,200;1,300;1,400&display=swap');

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    --primary-green: #5cad6e;
    --primary-green-dark: #4a9d5a;
    --primary-green-light: #6bbd7e;
    --secondary-green: #2d5a3d;
    --accent-green: #7dd87d;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #6c757d;
    --text-dark: #212529;
    --text-light: #6c757d;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 30px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --z-backdrop: 1000;
    --z-modal: 1050;
}

/* ===== RESET AND BASE STYLES ===== */
* {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    position: relative;
}

/* ===== MOBILE-FIRST CONTAINER ===== */
.container {
    width: 100%;
    max-width: 400px;
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    position: relative;
    min-height: 600px;
}

/* ===== MOBILE HEADER SECTION ===== */
.mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--white);
    border-bottom: 1px solid var(--medium-gray);
    position: relative;
    z-index: 10;
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--light-gray);
    border: none;
    border-radius: 50%;
    color: var(--text-dark);
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

.back-btn:hover {
    background: var(--medium-gray);
    transform: translateX(-2px);
}

.mobile-logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    justify-content: center;
}

.mobile-logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.mobile-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

/* ===== FORM SECTION ===== */
.form-box {
    padding: 20px 18px;
    background: var(--white);
    position: relative;
    z-index: 5;
}

.form-box h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== INPUT STYLES ===== */
.input-box {
    position: relative;
    margin-bottom: 12px;
}

.input-box label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 3px;
}

.password-input-wrapper {
    position: relative;
    width: 100%;
}

.input-box input {
    width: 100%;
    padding: 10px 14px;
    background: var(--light-gray);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    outline: none;
    font-size: var(--font-size-base);
    color: var(--text-dark);
    font-weight: 400;
    transition: var(--transition);
}

.password-input-wrapper input {
    padding-right: 45px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 10;
    font-size: var(--font-size-base);
}

.password-toggle:hover {
    color: var(--text-dark);
}

.password-toggle:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
    border-radius: 4px;
}

.password-toggle:active {
    transform: translateY(-50%) scale(0.95);
}

.input-box input:focus {
    border-color: var(--primary-green);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(92, 173, 110, 0.1);
}

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

/* ===== FORGOT PASSWORD LINK ===== */
.forgot-link {
    text-align: right;
    margin: -3px 0 6px 0;
    padding: 0;
}

.forgot-link a {
    font-size: var(--font-size-sm);
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    padding: 1px 3px;
    border-radius: 3px;
}

.forgot-link a:hover {
    color: var(--primary-green-dark);
    text-decoration: underline;
    background: rgba(92, 173, 110, 0.1);
}

/* ===== BUTTON STYLES ===== */
.btn {
    width: 100%;
    height: 46px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    border: none;
    border-radius: var(--border-radius);
    color: var(--white);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    margin: 6px 0 0 0;
    padding: 0;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn::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;
}

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

/* ===== REGISTER LINK ===== */
.register-section {
    text-align: center;
    margin-top: 10px;
    padding-top: 6px;
    border-top: 1px solid var(--medium-gray);
}

.register-section p {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    margin: 0 0 3px 0;
    padding: 0;
}

.register-section a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
    padding: 1px 5px;
    border-radius: 3px;
    display: inline-block;
}

.register-section a:hover {
    color: var(--primary-green-dark);
    text-decoration: underline;
    background: rgba(92, 173, 110, 0.1);
}

/* ===== ERROR MESSAGE ===== */
.message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
}

.message.error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.message.success {
    background: #efe;
    color: #363;
    border: 1px solid #cfc;
}

/* ===== DESKTOP LOGO SECTION (Hidden on mobile) ===== */
.toggle-box {
    display: none;
}

.toggle-panel {
    display: none;
}

/* ===== TABLET STYLES (768px+) ===== */
@media (min-width: 768px) {
    body {
        padding: var(--spacing-lg);
        min-height: 100vh;
    }

    .container {
        max-width: 900px;
        min-height: 600px;
        display: flex;
        flex-direction: row;
        border-radius: var(--border-radius-xl);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
    }

    .mobile-header {
        display: none;
    }

    .form-box {
        width: 50%;
        padding: 20px 22px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--white);
        position: relative;
        z-index: 10;
    }

    .form-box h1 {
        font-size: var(--font-size-3xl);
        margin-bottom: 20px;
    }

    .toggle-box {
        display: block;
        position: relative;
        width: 50%;
        height: 100%;
        background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
        overflow: hidden;
        position: relative;
        border-radius: 0 var(--border-radius-xl) var(--border-radius-xl) 0;
        margin: 0;
        padding: 0;
    }

    .toggle-box::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background:
            radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
        opacity: 0.9;
    }

    .toggle-box::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
        opacity: 0.4;
    }

    .toggle-panel {
        display: flex;
        position: absolute;
        width: 100%;
        height: 100%;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        color: var(--white);
        z-index: 2;
        padding: 78px 63px 118px 63px;
        text-align: center;
        margin: 0;
        border: 4px solid rgba(255, 255, 255, 0.2);
        border-radius: 0 0 0 0;
    }

    .toggle-panel h1 {
        font-size: var(--font-size-3xl);
        font-weight: 700;
        margin-bottom: 48px;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }

    .toggle-panel p {
        font-size: var(--font-size-lg);
        text-align: center;
        margin-bottom: 63px;
        opacity: 0.95;
        line-height: 1.6;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
        padding: 0 31px;
    }

    .logo {
        width: 120px;
        height: 120px;
        border-radius: 50%;
        object-fit: cover;
        margin-bottom: 63px;
        border: 8px solid rgba(255, 255, 255, 0.3);
        box-shadow:
            0 8px 32px rgba(0, 0, 0, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
        transition: var(--transition);
    }

    .logo:hover {
        transform: scale(1.05);
        box-shadow:
            0 12px 40px rgba(0, 0, 0, 0.4),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }

    /* Enhanced form styling for tablet */
    .input-box {
        margin-bottom: 14px;
    }

    .input-box input {
        padding: 12px 16px;
        font-size: var(--font-size-lg);
    }

    .btn {
        height: 50px;
        font-size: var(--font-size-lg);
        margin: 10px 0 0 0;
    }

    .forgot-link {
        margin: -6px 0 8px 0;
    }

    .register-section {
        margin-top: 14px;
        padding-top: 10px;
    }
}

/* ===== LARGE DESKTOP STYLES (1024px+) ===== */
@media (min-width: 1024px) {
    body {
        padding: var(--spacing-xl);
    }

    .container {
        max-width: 1000px;
        min-height: 650px;
        box-shadow:
            0 20px 60px rgba(0, 0, 0, 0.15),
            0 0 0 1px rgba(255, 255, 255, 0.1);
    }

    .form-box {
        padding: 32px 28px;
        width: 50%;
    }

    .form-box h1 {
        font-size: 2.5rem;
        margin-bottom: 24px;
    }

    .toggle-panel {
        padding: 117px 95px 177px 95px;
        border: 6px solid rgba(255, 255, 255, 0.25);
    }

    .toggle-panel h1 {
        font-size: 2.5rem;
        margin-bottom: 72px;
    }

    .toggle-panel p {
        font-size: 1.25rem;
        margin-bottom: 95px;
        max-width: 300px;
        padding: 0 47px;
    }

    .logo {
        width: 140px;
        height: 140px;
        margin-bottom: 95px;
        border: 12px solid rgba(255, 255, 255, 0.3);
        box-shadow:
            0 12px 48px rgba(0, 0, 0, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }

    /* Enhanced form styling for desktop */
    .input-box {
        margin-bottom: 16px;
    }

    .input-box input {
        padding: 14px 18px;
        font-size: var(--font-size-lg);
        border-radius: var(--border-radius);
    }

    .btn {
        height: 54px;
        font-size: var(--font-size-lg);
        font-weight: 600;
        margin: 12px 0 0 0;
        border-radius: var(--border-radius);
    }

    .forgot-link {
        margin: -8px 0 10px 0;
    }

    .register-section {
        margin-top: 18px;
        padding-top: 12px;
    }

    .register-section p {
        font-size: var(--font-size-base);
        margin: 0 0 5px 0;
    }

    .register-section a {
        font-size: var(--font-size-base);
        padding: 2px 7px;
    }
}

/* ===== EXTRA LARGE DESKTOP STYLES (1200px+) ===== */
@media (min-width: 1200px) {
    .container {
        max-width: 1100px;
        min-height: 700px;
    }

    .form-box {
        padding: var(--spacing-xl) 4rem;
    }

    .toggle-panel {
        padding: var(--spacing-xl) 4rem;
    }

    .logo {
        width: 160px;
        height: 160px;
    }

    .toggle-panel h1 {
        font-size: 3rem;
    }

    .toggle-panel p {
        font-size: 1.375rem;
        max-width: 350px;
    }
}

/* ===== ENHANCED DESKTOP INTERACTIONS ===== */
@media (min-width: 768px) {
    .toggle-panel {
        position: relative;
    }

    .toggle-panel::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
        transform: translateX(-100%);
        transition: transform 0.6s ease;
    }

    .toggle-panel:hover::before {
        transform: translateX(100%);
    }

    .form-box {
        position: relative;
        overflow: hidden;
    }

    .form-box::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 100%;
        height: 100%;
        background: linear-gradient(45deg, transparent, rgba(92, 173, 110, 0.05), transparent);
        transform: rotate(45deg);
        transition: all 0.3s ease;
        opacity: 0;
    }

    .form-box:hover::before {
        opacity: 1;
        transform: rotate(45deg) scale(1.1);
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .toggle-panel::before,
    .form-box::before {
        display: none;
    }
}

@media (prefers-contrast: high) {
    :root {
        --primary-green: #2d5a3d;
        --text-light: #333;
    }

    .toggle-box {
        background: var(--primary-green-dark);
    }

    .logo {
        border-color: rgba(255, 255, 255, 0.8);
    }
}

/* ===== FOCUS STYLES ===== */
.btn:focus,
.input-box input:focus,
.back-btn:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
}

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

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    body {
        background: white;
    }

    .container {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .toggle-box {
        display: none;
    }

    .form-box {
        width: 100%;
    }
}