/* Shared Variables & Resets */
:root {
    --color-primary: #191d2b;
    --color-secondary: #2f81f7;
    --color-white: #FFFFFF;
    --color-black: #000;
    --color-grey0: #f8f8f8;
    --color-grey-1: #dbe1e8;
    --color-grey-2: #b2becd;
    --color-grey-3: #6c7983;
    --color-grey-4: #454e56;
    --color-grey-5: #2a2e35;
    --color-grey-6: #12181b;
    --br-sm-2: 14px;
    --box-shadow-1: 0 3px 15px rgba(0,0,0,.3);
    --transition: all .4s ease-in-out;
}

.light-mode {
    --color-primary: #FFFFFF;
    --color-secondary: #2f81f7;
    --color-white: #454e56;
    --color-black: #000;
    --color-grey0: #f8f8f8;
    --color-grey-1: #6c7983;
    --color-grey-2: #6c7983;
    --color-grey-3: #6c7983;
    --color-grey-4: #454e56;
    --color-grey-5: #f8f8f8;
    --color-grey-6: #12181b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    list-style: none;
}

body {
    background-color: var(--color-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    color: var(--color-white);
    transition: var(--transition);
}

a {
    display: inline-block;
    text-decoration: none;
    color: inherit;
    font-family: inherit;
}

header {
    min-height: 100vh;
    color: var(--color-white);
    overflow: hidden;
}

section {
    min-height: 100vh;
    width: 100%;
}

.container {
    padding: 3rem 18rem;
}

/* Navigation Controls */
.controls {
    position: fixed;
    z-index: 10;
    top: 50%;
    right: 3%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: translateY(-50%);
}

.controls .control {
    padding: 1rem;
    cursor: pointer;
    background-color: var(--color-grey-4);
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: .7rem 0;
    box-shadow: var(--box-shadow-1);
    transition: var(--transition);
}

.controls .control i {
    font-size: 1.2rem;
    color: var(--color-grey-2);
    pointer-events: none;
}

.controls .active-btn {
    background-color: var(--color-secondary) !important;
}

.controls .active-btn i {
    color: var(--color-white) !important;
}

/* Theme Toggle */
.theme-btn {
    top: 5%;
    right: 3%;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: var(--color-grey-4);
    cursor: pointer;
    position: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 3px 15px rgba(0,0,0,.3);
    transition: all .1s ease-in-out;
}

.theme-btn:active {
    transform: translateY(-3px);
}

.theme-btn i {
    font-size: 1.4rem;
    color: var(--color-grey-2);
    pointer-events: none;
}

/* Typography & Main Components */
.main-title {
    text-align: center;
}

.main-title h2 {
    position: relative;
    text-transform: uppercase;
    font-size: 4rem;
    font-weight: 700;
}

.main-title h2 span {
    color: var(--color-secondary);
}

.main-title h2 .bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    color: var(--color-grey-5);
    transition: var(--transition);
    z-index: -1;
    transform: translate(-50%, -50%);
    font-weight: 800;
    font-size: 6.3rem;
}

/* Responsive Styles */
@media screen and (max-width: 600px) {
    .container {
        padding: 2rem 2.5rem !important;
    }

    .controls {
        top: auto;
        bottom: 0;
        flex-direction: row;
        justify-content: center;
        left: 50%;
        transform: translateX(-50%);
        width: 100%;
        background-color: var(--color-grey-5);
    }

    .controls .control {
        margin: 1rem .3rem;
    }

    .main-title h2 {
        font-size: 2.5rem;
    }

    .main-title h2 .bg-text {
        font-size: 3rem;
    }
}